The fastest racing car on earth, free of any and all regulations: The X2010 project between Gran Turismo and Red Bull, had not ended with the birth of this machine. As with F1 cars which continue to evolve every year, the idea was that the X2010 must be allowed to evolve.
1 year later, the idea takes shape. This is the further advanced form of the X2010, the Red Bull X2011.
The smooth glass canopy and tyre cowling of the original X2010 gives it very low air resistance. The suction fan which produces downforce regardless of speed, together with the front and rear wings and diffusers which produce downforce at high speed, allow the X2010 to achieve a maximum speed of over 311 mph, pulling 8G’s of maximum horizontal G’s in the corners.
In the X2011, the cross section of the clear polycarbonate canopy characteristic to the car is narrowed even further, barely allowing room for the helmet and protector. This reduces the frontal surface area of the car. In addition, the cross sectional shape of the ducts connecting internal radiator, fan, and skirts is optimised to reduce cd (air resistance coefficient). There is no change to the engine type, power or downforce, but the reduced frontal surface area and cd result in less drag, and a higher top speed than the X2010.
The pursuit of ultimate speed, in a collaboration between Gran Turismo and Red Bull Racing has risen to new heights. We hope you’ll take this chance to experience the speeds attainable in this new machine.
Why dont you play Spot the changes.
Maybe the car sounds different too 
