SCCA amateur racing because I was a track rat (kid of a racer) back in the day . Really though I think many car people would love the old amateur racing days because there were so many different types of cars to look at. You had Formula Vee, F Ford, Super Vee, Sports 2000, GT1-5, SS1-5 etc. I loved being in the paddock and seeing all the different classes (I also loved the smells of the track).