I just read that a few minutes ago. It's sneaky but effective.Cops take the bus.
If you are in Montreal and you see a bus apparently being chased by a dozen police cars don't pull your phone out to take a photograph. You will likely end up with a ticket.
Police hop on a bus to spot sneaky texters
What a lot of people don't realize though, is that using hands free devices while driving is just as dangerous as using hand held devices.