ESPNF1 Columnist

February 28, 2011: Japanese car manufacturer Infiniti has joined Red Bull as a major sponsor for the next two seasons, but will not re-badge the Renault engines used by the team

February 28, 2011: Daimler AG and its partner Aabar Investment have now taken full control of the Mercedes GP team, after buying the final 24.9% share from the management team led by Ross Brawn

February 28, 2011: Mark Webber is confident Red Bull will treat him equally alongside new world champion Sebastian Vettel this season

February 28, 2011: Narain Karthikeyan is confident HRT has enough funding in place for the upcoming season, but expects its second driver to bring some sort of budget to the team

February 28, 2011: Jenson Button is not sure the full potential of the McLaren MP4-26 will be unlocked for the start of the season in Australia

February 28, 2011: As many as nine of the 12 teams may stick with the original dates for the four-day test at Barcelona

February 28, 2011: Narain Karthikeyan talks about his first weeks at HRT, its chances of success and his long-term plans

February 27, 2011: Huge crowds estimated at between 150,000 and 200,000 lined the streets in the Sergio Perez's home town of Guadalajara as he gave a demonstration of the new Sauber

February 27, 2011: The Bahrain royal family are still hopeful the postponed Bahrain Grand Prix can be slotted into the Formula One calendar later in the season

February 27, 2011: Two-time NASCAR champion Tony Stewart and Lewis Hamilton will swap race cars in an exhibition later this year

February 27, 2011: FIA president Jean Todt visited Robert Kubica in hospital on Sunday

February 27, 2011: Lewis Hamilton's former team-mate Fernando Alonso attempted to sabotage the Briton's drive during their partnership in 2007, according to a new biography titled No Angel: the Secret Life of Bernie Ecclestone

February 26, 2011: The final test of the 2011 Formula One pre-season in Barcelona has been delayed until March 9

February 25, 2011: There are concerns that squeezing Bahrain back into the Formula One calendar at a later date could cause logistical problems for teams

February 25, 2011: The IndyCar Series will offer up a $5 million prize fund to any driver from outside the championship who enters and wins the season finale at Las Vegas

February 25, 2011: The 2011 Indianapolis 500, which will mark the 100th anniversary of the first race, will start at midday on May 29

February 25, 2011: Ross Brawn is not overly concerned about the gap in performance between the new Mercedes and the early pacesetters in pre-season testing

February 25, 2011: Kimi Raikkonen sounds less enthusiastic than ever about the idea of returning to Formula One

February 25, 2011: Robert Kubica insists he is "very lucky" his injuries were not worse after his horror crash in an Italian rally earlier this month