Do you have to let them use your car or is it by choice? In an event like this who is responsible to pay for the damages? I'd be hesitant to let anyone I didn't know or trust on any vehicle I own. They have a similar thing for some of the professional racing schools like Skip Barber. My friend teaches at one of their schools. Years ago they were sponsored by Dodge and every once in a while the execs got to drive on the track or their buddies. I guess they dreaded those days as their are always a few types who push the limits but lack the brain power to deal with bad choices he'd tell me about the vipers and a few other vehicles that Dodge would bring to the event. Very powerful fast cars, but stock not very well designed brakes for the track.....after the cars were pushed for a short period of time they would experience stock brake failures!