Taking the bus is awful. Then again, flying commercial is generally an exercise in legal torture. And driving costs, like, $900 per block. So it made sense for Greyhound to compete with the Deltas and Continentals of the world, as well as your own person behind the wheel, with an ad campaign that read, "There's a reason you've never heard of 'bus rage.'" It was kind of clever, and at the very least nudged you in the direction of booking a motor coach ticket for your next trip. Then some guy in Canada cut the head off of another Greyhound passenger. The bus company has pulled the campaign.