I want Fantasy NASCAR DFS! I think part of the reason football is so popular is that it is a once a week event and NASCAR would draw hard because of that.
I know the legality concerns of the single event is what has prevented NASCAR from becoming a DFS staple. I was thinking that much like the golf tournaments which are rounds of an event, you could do NASCAR and include qualifying to satisfy the multi-event clause of the law. Lineups lock at Qualifying, if your drivers qualify, they get a point each, then late swaps can occur before raceday. The qualifying points should cancel out for everybody as everyone should have compiled rosters of those who are locks to qualify.