I have guys on mini-bikes (gas powered) and other gasoline converted bikes pass me at least once every 5 rides between the Steel Bridge and PCH. They mostly appear to be the trouble-maker kind of personality in appearance. Someone who knows if they ride it on the road they will be caught, so they occasionally take it out on the SGRT. Other than being a little pissed off I don't think there's much we can do about it.