We need to get the US interested in the TT. Most of us have no idea wtf it is if you bring it up, even amongst avid riders (v twins especially).
I'd like to see them bring back Group B rally as well. In the deep south I'm sure they'd change it to a dirt figure 8 track and put the pedals on the opposite side as the steering wheel.
If any Europeans feel like reciprocating, have a look at sprint cars or Top Fuel. I know we can't seem to get past ovals and drag strips here... but 800 HP on dirt or 7000+ HP on pavement is very exciting to watch.
Ecomentalists who find this excessive might like roto-tiller racing. Those guys are on foot and going faster than Olympians by the simple use of using a garden implement to pull them as they run. I'm serious, it's a friggin awesome spectacle of psuedo-motorsport action on a budget even a drunkard Irishman on the dole could afford.