This (at least the "fuel efficient cars" part is occurring because of LEED, which I have railed about before.
Buildings are not 'energy efficient' if they are surrounded by parking and require driving to get there, even if that parking privileges certain travelers, even if those cars are "fuel efficient". Fuel efficiency should be its own reward. The enforcement hassle (is the car listed with some fuel efficiency list which no one knows and is not current?) make the whole thing a ridiculous game. This is not quite as bad as giving hybrids preference in HOV lanes, but almost as silly.