HBRAMSTEDT - Only two people in each car. Driver and Instructor.
Think my instructor was having as much fun as I was. He kept cussing the other driver out for not letting me pass on the straight so I could show him the faster line through the twisties!
By the end of second lap he kept me nosed right into his bumper for a full lap to let him know someone was back there. Guess the other driver thought it was a double reflection of his back seat!