This game is very very bad.Here are my top 3 reasons:
1- The camera is rotates in a very weird way.
2- The cars themself aren't drawn very well but you
should make atleast 3 diffrent cars(one has bigger acceleration the other has a higher top speed and the third an average and then you could also make an unlockable hummer that would be the best of them)
3- The reality is that a hummer cant go 180 kmh through without losing any speed(if you dont go on the grass of course).