I'm pretty sure I saw a stolen bike go by one evening while waiting for a bus.

Adult male wearing a sweatshirt, jeans and white tennies. (no helmet or anything) Riding a clipless Cervelo that was obviously too big for him. There's no way he could have even got his buns up on the saddle and still pedalled. He rode like a bat out of he11 away from the hospital parking area. I learned later that several bikes had been stolen from the hospital bike lot that day.