I unfortunately didn't quite understand what I was doing, why the checkpoints(?) disappeared and what the goal was. The controls were a little slippery, I basically had to come to a standstill and rotate in front of each and every cone to collect them :D It might just be a skill issue :P Great music for a driving game!
I got 850 points, I hope that's good :P
Small note: the game worked fine on my mac.