im having a hard enough time trying to cobble together a cargo bicycle to worry about motorcycles of any sort, cars, trucks, boats, flying saucers, battle tanks, licenses, taxes, fees, fines, repair costs, modification costs, scam-surance, pink slips, traffic slips, certificates, and perhaps worst of all, uniformed (and uninformed) policy bureaucrats with guns, who love a good show of force for violence's own sake.
so yeah, much as i would LLOOVVEE to be able to consider having automotive hobbies, the meagerest of the meager (perhaps even to the point of completely giving up on any sort of wheeled vehicle, and walking everywhere as an unofficial personal Law) is a rather enforced end-item for me.