By day, Robert Lind is a hard-working stiff who drives a 1988 BMW 325 that gets 27 miles to the gallon. Mr. Lind likes to tag en masse. He has rules, though.
Commercial vehicles are off limits.
He doesn't retag. Since he began about six weeks ago, Mr. Lind says he's probably hit 500 cars. He isn't worried about the law, and with good reason. But probably nothing would happen to him.