Good game.
Nice game you've got here, fairly simple and that kind of makes it slightly dull. The easiness of the game means you can basicly leave the actual screen whilst doing something else then come back and have a really high score, that is, on easy mode. The other modes are fairly easy too. I think you should make it slower and put obstacles (trees etc) in the middle of the runway for people to dodge rather than them being at the side moving in and out. Apart from that it was good. Nice choice of music and sound effects to go with it, and it has a highscore system which really makes it worth while playing.
Well done!