Maybe it's just me but I think that it is sometimes faster to drive on grass with the x1 compared to tarmac. For anyone that has it unlocked, run the like the wind race at daytona. After taking the first two turns and hitting the straight look at your speed while driving on tarmac. Next lap go to the inside of the straight and drive on the long grass straight and look at your speed. I will try to get a video up soon