It's every bicyclist's worst nightmare. You're riding down the street and a line of vehicles is parked parallel to your right along the road. You're following all traffic laws and riding carefully, then out of nowhere, the drivers' side doors of one of the parked cars flies open directly in your path. You crash into the door, go flying over your handlebars and your body smashes into the concrete.
As a result of the collision, you break your collarbone, bruise some ribs and have a near-fatal head injury. Meanwhile, the driver of the car is looking over you and trying to tell you it was your fault.