> allows all people to use them without a motorcycle license Also (and I think more notably) the DMV does not require registration in most US states. There's

> allows all people to use them without a motorcycle license Also (and I think more notably) the DMV does not require registration in most US states. There's a fair number of people who end up on them after getting DUI's as well (although technically this is not legal since you're still required to have a valid driver's license almost everywhere... but they probably don't get caught that often).