A Real Mass-Transit Program
According to Jane Galt, mass transit is not viable outside New York (I think this includes Hudson County, New Jersey), Boston, San Francisco, Philadelphia, and Chicago. Clearly, the best mass-transit program would try to improve the economies of New York/Hudson County, etc. The simplest way to put more money into those areas is tax cuts for the obscenely wealthy.
You probably didn't know Dubya was such a supporter of mass transit.