[Bicycle Bob]

GM bought and sold enough Metros to fine - tune their Corporate Average Fuel Economy and stay legal. Owning one has always made sure that one has few status-conscious friends. To popularise efficient cars, they might be allowed in car-pool lanes on the basis of gallons per passenger mile. Even better, to really raise status, they could be given a speed-limit exemption, based on efficiency and lower kinetic energy, or public danger.