Sickening videos have been released of a series of hit-and-run incidents in which a deranged driver deliberately runs over pedestrians on the streets of Seattle, while the occupants of the car can be heard laughing in the background.
Footage has been released by the Seattle Police Department that shows two separate incidents occurring within a few blocks of one another.
Video shot by surveillance cameras matches that shot from within the vehicle itself, filmed on a cellphone and later posted to social media.
