Whoa, this is what I'm always afraid will happen on a group bike ride in Portland: A driver straight up plowed through a crowd of 150 cyclists on a Critical Mass ride in Brazil last Friday. The video below is pretty horrifying. Though somehow no one died, two people are in serious condition. The driver ditched his Volkswagen Golf a few blocks away and took the plates, but is now claiming "self defense". People on the ride are doubly upset that police and media have referred to the incident as an "accident"—think how different this would be if the weapon in the potentially deadly assault were a knife, a baseball bat, or anything other than a car.