[slouch]

Vehicle choices aren't made based on utility outside the jobs you suggest. See also motorcycles.

[rtkwe]

That's why I said need, vanishingly few people need a motorcycle too but at least they're more fuel efficient then cars and take up less space.

[slouch]

Not if you ride in a group. One or two people on one motorcycle? Sure, that's efficient. Two motorcycles, six motorcycles, etc, in a group ride? Forget it.