Spanish national team HRT have unveiled its new racer for the upcoming Formula One season with the F112.

The F112 completed its first laps at the Circuit de Catalunya today (March 5th), ahead of its Grand Prix debut in Australia in less than a fortnight’s time.

HRT took advantage of the filming day regulations in order to shakedown its new car after having been unable to get the car ready in time for the final pre-season test last week.

Narain Karthikeyan had the honour in driving the F112 on its maiden outing late in the afternoon at the track, after a frantic effort by the team to get the car ready in time.

Karthikeyan’s team-mate Pedro de la Rosa was also at the track following the proceedings.

The F112 will be powered by Cosworth engines for the third year in succession.

HRT’s car was unveiled on the same day as rivals Marussia, although the Anglo-Russian team is yet to pass all the mandatory crash tests set out by the FIA.

The Marussia was in action at the Silverstone circuit.

With both teams missing out on pre-season testing, it will be a race against time to become competitive in the opening few races of the new season.

Marussia has unveiled its new Cosworth-powered racer during a promotional event at Silverstone.

The Anglo-Russian team is running the MR01 for the first time at the venue of the British Grand Prix after the car had failed the mandatory crash tests outlined by the FIA and was therefore unable to join its rivals in the final pre-season test at Barcelona.

“We are very pleased to be running the new MR01 for the first time this morning (March 5th),” said team principal John Booth. “It has been a long and frustrating wait for everyone in the team but we can now get back on track – literally – and start working towards the first race of the season in Australia next weekend.

“Today is the first of two promotional events, so while the drivers will be able to get a feel for the car, they won’t be able to draw any real conclusions until we start running in anger in Melbourne. Nevertheless, this is an important day for us and we’ll enjoy every minute on track with the new car.”

The team said the MR01 is the result of a ground-up re-evaluation of the way it designs its racing cars after having used only CFD technology for its previous challengers.

The design team for the MR01 was led by Marussia’s technical consultant Pat Symonds. Marussia said the technical partnership agreed with McLaren Applied Technologies last year has been a big influential in the design process.

Timo Glock and Charles Pic will form Marussia’s driver line-up this season but both will face a steep learning curve in the opening few races due to the late showing of the MR01.

But at least the car looks elegant and has gone against the steeped nose compared to its rivals. Let see if the new car is competitive.

Former Williams driver Rubens Barrichello will start a new chapter in the IndyCar Series after signing a race deal with KV Racing.

The most experienced driver in Formula One history will contest the full season, including ovals, racing for the team co-owned by 1996 CART champion Jimmy Vasser.

His team-mates in the three-car outfit will be Tony Kanaan and EJ Viso.

“I am thrilled, it is something very new to me,” Barrichello said. “I need to thank everyone involved, especially Tony [Kanaan] because he has been involved for a long time.

“I will start as a rookie, but I think I will get better as the year progresses. My main thing is to be an addition to the team.

“They have been doing very well and Tony brought them to a different level last year, so I hope with my contribution we can build on this and take the team to another level. I am extremely happy and have a big smile on my face.”

KV also confirmed that Kanaan, who joined from Andretti Autosport ahead of the 2011 season, will remain with the team for the next two years.

“I am very excited to be returning to KV Racing Technology not only with a two year deal but also to have Rubens as my team-mate,” Kanaan said.

“We have always dreamed about racing together but never imagined it would actually happen and certainly not in the near future or in Indycars.”

Team co-owner Kevin Kalkhoven added: “I was at Sebring when Rubens first got into an Indycar. The smile when he got out of the car was a great moment and lasted for three days.

“Teamed with his ‘brother’ Tony Kanaan this is going to be an exciting season for the drivers, the team and the fans.”

Barrichello, who holds the record for most F1 starts with 322, will make his IndyCar debut as a rookie on March 25th in the season-opening race on the St Petersburg street circuit in Florida. The fourth race of the season will be his home event at another street track in Sao Paulo, Brazil.

His first oval race will be the Indianapolis 500 on May 27th. Former Formula One driver Jean Alesi has said he will compete in this year’s race as a one-off.

Barrichello will race the Dallara DW12 IndyCar, which is being introduced this year.

Video of Rubens Barrichello testing for KV Racing:

The new Mercedes W03 was officially unveiled to the world’s press just prior to the start of the second week of official Formula One testing at the Circuit de Catalunya.

As seen in the spy shots earlier last week, the W03 features the stepped nose, similar to that of several other Formula One cars.

The new car has already been shaken down at Silverstone last week, and conducted a private test at Catalunya on Sunday – which the team were permitted to undertake because it had only been present for three of the four days of running at Jerez earlier this month.

Mercedes chose to stick with its 2011 car for Jerez in order to gain valuable data on this season’s Pirelli tyres, and was quickest on two of the days it was present – though it was running to full 2011 specification, including the no-longer-permitted exhaust-blown diffuser.

Norbert Haug, Mercedes motorsport chief, has commented that the W03 would not feature any radical innovations – contrary to speculation that the team had waited until the second test to reveal the car because it featured technical breakthroughs it did not want rivals to copy.

The most obvious outward change is the move to a stepped nose, in common with the majority of rival teams.

Having been unable to beat rivals Red Bull Racing, McLaren and Ferrari to race wins in its first two years, Mercedes GP is hoping to get among the top three on a more regular basis this season.

Last year it revamped its technical team with the addition of former Renault engineer Bob Bell, ex-Ferrari design chief Aldo Costa, and Geoff Willis, formerly of Williams, BAR and Red Bull Racing.

Nico Rosberg and Michael Schumacher continue in an unchanged driver line-up at Mercedes. With Schumacher coming into the final season of what was initially planned as a three-year comeback deal, speculation about whether the seven-time world champion will stay on into 2013 and beyond is likely to be one of the biggest stories around Mercedes this season.

The Williams-Renault FW34 has been revealed to the world’s press just a few hours before the start of the opening pre-season testing in Jerez.

After a very poor 2011 season, in which the Grove-based team scored just five points and finished ninth in the constructors’ standings, Williams are hoping for a changes in fortunes this year.

The FW34 is the first Williams to be produced since the major change of technical line-up at the team, which saw erstwhile technical director Sam Michael head for McLaren and co-founder Patrick Head step away from the Formula One side of the operation. Mark Gillan now leads the technical side of the operation.

The FW34 also sees the reunion of the multiple championship winning Williams-Renault partnership, as the Grove-based squad switches from its previous Cosworth V8s to the engine that powered Red Bull Racing to the last two titles.

On the driver side, Bruno Senna has replaced Rubens Barrichello, while Pastor Maldonado remains for a second season. Test driver Valtteri Bottas gets an enhanced role that will include some Friday practice running.

Team principal Frank Williams said: “One could say that looking at the Williams F1 Team today we are off to a truly fresh start. We have a new car, new driver line up, new engine and new senior personnel.

“We also have a number of new partners who have joined the team in the past few months. I’d like to take this opportunity to welcome them formally and sincerely wish that they have an enjoyable and, most importantly, a valuable experience with us. The team has had a good winter at the factory and we feel ready and strong for the fight.”

This is the car that all the Formula One teams must beat following the unveiling of the new RB8 from defending world champions Red Bull Racing.

The Milton Keynes-based squad hopes the Adrian Newey-designed machine will continue their ultra successful title winning run in 2012 with the Renault-powered RB8.

Having taken Sebastian Vettel to the last two drivers’ titles alongside its 2010 and 2011 constructors’ crowns, Red Bull Racing’s latest design is the most eagerly awaited of the new season contenders.

Adrian Newey, the man generally regarded as the key to Red Bull’s recent domination, is again responsible for leading the RB8 design.

The car appears outwardly similar to last year’s all-conquering RB7, which won 12 out of 19 races, but features a revised nose layout and a different exhaust to accommodate this season’s rule changes.

Attention has been focused on the stepped nose design on RB8 and close inspection reveals a possible f-duct system could be in place… Does Newey have an aero secret up his sleeve with the now dubbed ‘Bull-duct‘?

The line-up of Sebastian Vettel and Mark Webber remain unchanged for the fourth consecutive season. However, ex-Toro Rosso racer Sebastien Buemi is now Red Bull Racing’s reserve.

Video of the Red Bull Racing RB8 launch:

Scuderia Toro Rosso unveiled their latest contender for this year’s world championship with the STR7, ahead of the official start of Formula One testing at Jerez.

As expected, the STR7 features a stepped nose, similar to that seen in all the 2012 Formula One cars unveiled so far apart from the McLaren MP4-27, which opted for a different approach with a low chassis and nose treatment.

The Toro Rosso, powered by Ferrari engines for the sixth season, will be driven by Daniel Ricciardo and Jean-Eric Vergne after the team opted for an all-new line-up for the upcoming season.

Last year, the Faenza-based squad finished in eighth position in the constructors’ standings with Jaime Alguersuari and Sebastien Buemi.

“On Saturday (February 4th) at 10.00 am when loading the car I wasn’t convinced we could do it in time as there was so much snow, but we did it,” said team boss Franz Tost during the launch.

“The STR7 is the third car designed, fabricated and assembled completely by Toro Rosso. We have invested a lot of money to build up the infrastructure and I hope the results will be good in the forthcoming season. This investment was only possible because we have strong partners.

“Tomorrow (February 7th) we go out the first time with the new car and it is always something very special. We have two new highly skilled drivers and I am convinced both will do a very good job.

“Last year we finished eighth in constructors’ and this year we hope to do better, so seventh or more.”

The new car will take to the Spanish track for its debut run on the first official day of testing. Australian’s Ricciardo will have the unique honour to shakedown the new Toro Rosso STR7.

Sauber have unveiled their contender, the Ferrari-powered C31, for the 2012 Formula One world championship.

The Swiss squad finished in seventh place in the constructors’ standings last year after scoring 44 points following a strong start to the season.

After a drop in performance during the middle part of 2011, Sauber managed to keep rival Scuderia Toro Rosso at bay thanks to two point-scoring results in the final races of the season, thus securing seventh position.

The team will have an unchanged line-up for 2012 in the shape of Kamui Kobayashi and Sergio Perez.

The Hinwil-based squad will start the season without its technical director James Key, who announced last week he was leaving the team he had joined at the start of 2010.

“Our goal is to finish regularly in the points so as to put ourselves in a significantly better position in the world championship,” said team boss Peter Sauber.

“We are looking forward to another season working with our young and talented drivers. Kamui will be competing in his third full season in F1. Last year we asked him to take on leadership responsibilities within the team and he has grown into the role.

“With his rookie season behind him Sergio is now approaching his second season, which is often the most difficult in a driver’s Formula 1 career. Both drivers have huge potential and will work with the same race engineers as in 2011 to continue developing that promise.”

The C31 continues with the trend set by other teams and it incorporates a stepped nose.

Unlike last year, the new Sauber features a pull-rod design for its rear suspension, allowing for improved packaging of the rear spring and damper elements.

The Lotus E20, the Enstone-based team’s 2012 Formula One challenger, has been revealed via an online event broadcast on the team’s website and YouTube channel.

The team, which competed as Renault last year has changed its identity and will be going into its first season with full Lotus branding.

The E20 is outwardly one of the more traditional designs unveiled so far, though it features the stepped nose design now commonplace, and reverts to a traditional exhaust layout – as mandated by the 2012 regulations – after last year’s experiment with a forward exiting exhaust. Team boss Eric Boullier hinted that the design featured plenty of subtle innovations.

“It’s true that the team’s reputation is good in terms of innovation and we brought through the last years some nice ones, and let’s say some more delicate ones, but definitely we have some this year,” he said.

The car is the first to be entered by the ex-Renault team under the Lotus title after the end of the branding dispute with rival team owner Tony Fernandes, whose erstwhile Lotus squad now runs as Caterham.

The E20 keeps the traditional black and gold colours used by the original Team Lotus team in the 1970s and 80s, and features prominent new sponsorship from Unilever brands Rexona and Clear.

Lotus has enticed 2007 world champion Kimi Raikkonen back to Formula One this year, with former test driver Romain Grosjean promoted to the second race seat alongside the Iceman after claiming last year’s GP2 title.

Boullier said the priority was to bring a winning spirit back to Enstone, which had claimed championships in its Benetton and Renault eras, most recently in 2006 with Fernando Alonso.

“My biggest hope is obviously to bring this positivity back again and to make sure this team is again at the front of the grid and for many years and a long time,” said Boullier.

“Also, to have all the people in Enstone enjoying life here and enjoying their passion for motor racing and F1.

“The fear is that we can have anything wrong which you cannot expect or handle and which would slow down this process.”

Lotus were known to have been working on a reactive ride height system for the E20, which they tested on its predecessor in Abu Dhabi late last year. However the sport’s governing body banned the system last month.

Video of the Lotus E20 launch: