I think the idea of the game is really fun. I also like the calm music. I have a few tips:
It took me a few times to get out of the garage, because my car kept getting stuck on the edge of the garage.
Also the wheels disappear immediately when you try to replace them and you miss the car, and that can leave you with only one wheel, or even zero :p
The third thing is that I collected a booster, but I didn't know how to rotate it, so it could attach it to the back of the car and it would boost me forward, instead of up.