Chippewa County prosecutors have filed 11 felony charges against the 21-year-old driver of the truck which ran down a group of Girl Scouts last weekend, killing four people. Colten Treu could face up to 160 years in prison if he is convicted on all of the charges, which include four counts of vehicular homicide. Treu may have been high after inhaling chemical vapors when the accident happened. Three Girl Scouts and a 32-year-old woman were killed.