They provide the cars. This one was 3 days and the first two days you have some track time, but also do slalom, wet skid pad and auto cross. You use different cars for each event, all AMGs. We used the E63S on slalom, the C63S on skid pad and the CLK on auto cross. Auto cross was really fun this year, had a little better course config. On the track we used the C63S, GTS and C43. I own a GTS, so I am more comfortable in that car. They wanted us to drive the C43 the second morning on the track, I didn't want to, but they wanted us to try it out. Got to turn 11 before the long straight, hit the throttle, wouldn't go over 25 mph. Started to pull over to the rumble strips, car stalls completely. Went it "limp mode", self preservation if there is a system that is overheating, like brakes, transmission fluid, oil, etc. So they had to come rescue me off the back straight. AJ said I was driving it too hard, I said, I'm done with the C43s
The last day is all open lapping except for race start practice, where you grid and start behind a pace car. Very fun! Otherwise, we were running laps or doing analysis of the telemetry to improve our times. It was a really great day. We drove the GTSs all day. I have to say, I know that is the car I own and I bought because I loved it on the track, but I have an all new respect for that car. We were beating on those cars in 100 degree weather all day long and not one had problems. And really driving on the track and grip, I love the C63S but the GTS beats it hands down on the track.