Riding in California, lane sharing is legal. I frequently do it, mostly at traffic lights etc, when traffic is stopped and I can move up to the front. So recently I was first at a traffic light, and got the wierd thought of "If I happened to be close to one side of the lane, and there was room, what prevents a CAR from sharing the lane with a motorcycle? I've never seen it happen, but I wondered if it ever happened to someone here. I looked up what the DMV has to say about sharing, and it mostly states that it's not safe, but neither is it illegal. It seems like a car wouldn't do it unless they were a motorcyclist that happened to be in a car, and knew it was legal. Has anyone ever had a car come up and share a lane with them?