Elsewhere , 2007 world champion Kimi Raikkonen drove an F1 car for the first time since 2009 at a private test event in Valencia , Spain on Monday . FIA bans technology which improves aerodynamics of Formula One cars . Reactive ride-height systems help cars stay low to the track when braking . They also reduce drag and improve fuel efficiency, but they are banned in F1 because it is considered a safety hazard. The 2007 world champion tests the team 's 2010 car at private event in Valencia .
FIA bans technology which improves aerodynamics of Formula One cars . Reactive ride-height systems help cars stay low to the track when braking . They also reduce drag and improve fuel efficiency, but they are banned in F1 because it is considered a safety hazard. The 2007 world champion tests the team 's 2010 car at private event in Valencia .