Nader would be good. He'd probably outlaw cars and make us ride bicycles and the bus.

Peak oil solved.
Seriously, anyone who would impose high (multi-thousand dollar) taxes on gas guzzlers would be a good choice. Get us on a path to reduce car use and then when we have to use cars, use them more efficiently with better mileage.
I think we have too many Czars. Car czar, national security czar, housing czar, debt czar. We'll need a czar czar soon.
Riches are not from abundance of worldly goods, but from a contented mind.