Not related directly to slotcars, but in some ways it could be. This little online game called Escapa requires you to have lightning reflexes, and great eye hand co-ordination to stay alive for as long as you can.
To play the game all you need to do is click and move the red box around without touching the walls of the box, or any of the blue blocks that float around. It is pretty challenging, and if you can make 18 seconds you are doing pretty well.
So far I have managed to stay alive for 18.244 seconds, leave a comment and let me know how long you can stay alive for.