My favorite driving experience would have to come from the Lancia Stratos at the Le Sarthe II. It was only the second car I ever took to that track, and compared to the first car I took there (Nissan Skyline GT-R V-Spec II), the Stratos was a revelation. At every turn, you're on the very edge of your traction limit, always threatened to completely lose it if you over step your boundaries. At speeds above 140 MPH, the car took on a mind of it's own and the slightest change in direction could and sometimes would cause the car to just lose it from the back. Then there was the braking at the end of the straight from above 150 MPH. If you were turning even a little whilst beginneing to brake, the, your entire view would soon be filled with the turn you just came out of.
My favorite racing moment would have to be a little different though. That comes from a race of which I was hotly outclassed, out powered, and out handled. It was the Nurburgring 4-Hour race in a DeLorean S2 against, among other things, a Lotus Elise 111R and a Opel Speedster Turbo. It was such a tough race, that not only did I just barely finish it, but I only finished it due to better pit strategy. The constant drifting I had to do to get that car through each turn and each nail-biting lap left me sweating profusely by the end of the race.