That might be the only part of racing i never really had much interest in. I am probably most interested when they had World Rally Course. Although the although the Chump car style of racing was kind of appealing also. Formula One is pretty intense and i like the GT class racing

. Now I know it doesn't exist as real racing, but I would like to see something like a demolition derby mario Kart Style Racing. Objects thrown on the racetrack to try to hinder the competition. It would be kind of neat to see the crowd be able to throw over old recliners and boxes as obstacles.
You said you wanted to get more people involved, that would do it. I think that's why a lot more people are interested in ice hockey basketball or football. The fans have more interaction and there's just a different breed of fan that goes to a hockey game