Over 10 years ago my wife and I and a couple of friends attended a historic race for my bday. I brought along my wife's camera gear. Long, long story short- I heard a 917 startup so I followed the sound of the engine. Lined up for photos in the pit lane were a 917k, 908, 904, and one other Porsche that I cannot remember. The official photog had not yet shown up so I took photos of the cars and the drivers and sent them the photos gratis. What a moment.
Another memory- walking through the pits and stumbling across a Cobra Daytona hidden from view. I walked over to the car and started drooling. The owner/driver asked me if I knew what it was... I blathered on like a total idiot. He asked me if I wanted to sit in it... once I was seated he started the motor. OMG, I was in HEAVEN.