I dont think I saw it out on the track with my own eyes, but I saw him pulling out of the paddock so most likely yes
The Mclaren was only out one session and we were warned that a 2 million dollar car would be out on the track with us thinking he would come up on us fast. I think one of the instructors was supposed to drive it. Whoever was driving created a train of cars behind, and was driving extremely slow. Maybe the car was not running right or something.
Trackmasters.com, they have novice and intermediate schools. If you have never driven the Glen before its probably best to get into the novice school if your interested, the problem is I think they only schedule it once a year in May. Its alot of fun and the instructors are great.