Massa drove one fuel cell car while a hybrid SUV towing an additional SUV followed along. Once he got half way, he switched to new fuel cell car. The empty fuel cell was then towed back by the first SUV. As he continued on his journey, the second SUV followed. Once Massa arrived in DC, the second SUV then towed the second fuel cell car back to NY.
So Massa wasted several times the amount of energy he needed for 300-mile trip . . . in order to make a point about the importance of conservation and alternative energy. Sadly, Rep. Massa's capacity for theater and obliviousness to reason likely means he's on his way to a very successful career in politics.