On Tuesday, January 31, U.S. President Barack Obama�s schedule included a visit to the 2012 Washington Auto Show. The White House informed automakers on a two days� notice to bring their most fuel-efficient models to the show. Naturally, they obliged. For example, Honda flew in the FCX Clarity from California, Kia brought the Optima hybrid and Mercedes-Benz a fuel-cell car. Carmakers also brought