I once saw a delivery van driver reading a paperback novel in stop and go rush hour traffic. On the back of the truck was a vehicle number, phone number, and a sticker that asked "How's my Driving?"
Suffice to say I called the phone number, reported the vehicle number, and asked the lady on the phone if it was normal operations for their drivers to read books while they drive? I hear a "WHAT?"...
Seen several people reading the newspaper going down the road, one or two makeup artists as well, and one time a mini-van with a rear seat television and they were watching porn in the back seat.