Are you speaking of simulator games for your computer or going to a special place that has full on robotic type cars?
I have a computer game called GTR2 FIA GT Racing Game. And I bought the Logitech MOMO Racing feedback wheel. The only thing it doesn't have is a clutch peddle. I think they make one with the clutch peddle, so I am thinking of taking it apart and see if there is extra wires I can convert one into it. I have also been having an idea of making motorcycle controls to attach to it. Now that would be cool.