That would be the Extreme Stunt Show at Universal Studios, Orlando. My Family and I are returning from there as I write this. It has got to be some of the most precision driving I have ever seen. If you get the chance, you MUST see this show!
Ditto on just being there too. I like the part where the driver is really sitting backwards in one of the cars with a dummy up front in the driver's seat. Looks like he's driving 90 mph backwards. Very good show.