More likely Warner v. Romney. 2 Economic Titans in 2012.

I believe that Warner is running for Senate in order to further legitimize himself as a presidential candidate and cultivate some D.C. relationships. (Not that he necessarily needs either).

Barring any 'macacca' Warner will be a presidential candidate in one of the next 2 cycles. He was smart enough to not get involved with the Bush mess and bide his time.