deliberately slowing down to aggravate someone puts everyone around that asshole in an unsafe condition. It's really dumb to let ego dictate other peoples' safety. Someone thinks they're cool because they can pass everyone? Cool, let them go on with their little fantasy. I see this all the time with big dodge drivers who think they're the shit because they can pass people on hills while towing and shine their brights through your back window. Yeah, you've got a big ass truck way to go, now please pass me and get out of my life.