Interesting concept, poor execution
I like the idea of a sonic racing game, but why call it a race when you are not up against anyone else? I didn't really see a clear goal to this game, other than trying to get a high lap time. The music was good, but I wasn't too fond of the layout of the tracks. I stopped playing on lap 3 on the first course before I got too frustrated, then I picked the easiest course (the last one) and finished it. The number of laps a bit too high - these courses are long, 3 or 5 laps will do.
Other than the music, I really did enjoy the controls you had set up...the ease of movement and if you hit the walls they aimed you back in the right direction was nice.
I'd like to see you make a race/dodge game in a first-person perspective, like the special stages in Sonic 2 or maybe a "mario kart" style layout. I feel you would be quite successful at that.