Just trying it out on my A1200/040. I'm getting an average of about 16FPS, which is okay. It sometimes gets to 25, and sometimes to 12.
The main thing that's missing (which I'm quite surprised by) is joystick control. Could an option be added for a 1 button joystick, since this is what 100% of people with Amigas will have? Up to accelerate, down to brake, fire to change gear.
At the moment I can't brake, so some corners I just crash on.