My understanding is that Slingshots are more akin to a 3 wheeled convertable than they are to a motorcycle. You sit in it not on it, it has a steering wheel, you can even have a roof, it has car-type pedals... It's a car not a motorcycle for practical purposes. Can-Am trikes are an example of a 3 wheeled vehicle that does qualify. All that said, look for a response from Ira. He's the official voice around here.