[Toutouxc]

To add to the sibling comment, the fuel consumption of most motorcycles isn't even that impressive. Larger touring bikes can easily rival more fuel-efficient cars. For example, the average fuel consumption of the nice all-round BMW R 1250 is the same as that of my fits-four-people-and-their-stuff-comfortably Škoda. Even the iconic Honda PCX125 scooter (considered very efficient) still burns around 60% as much gas as my car, and that's just with the rider and little highway use.