Really good. Please make the game more difficult, the game is too easy even in the endgame, when all ai cars are fully upgraded. The problem is that the ai cars often change to hard tires when pitting in the last 2 or 3 laps (the right choice would be soft tires). By that they fall behind quite a lot and the game looses its challenge. Also it would be nice if the player car is able to suffer from a random motor damage. I never witnessed that in a lot of played rounds.