Trinity Machowski, 13, and Arrianna Schings, 14, were reported missing when they didn't return home from Cadillac Junior High School on time Friday afternoon, according to the Michigan Department of Natural Resources.
Burton Police Chief Mike Odette said a 21-year-old man was out in the parking lot of the business. He was taken to an area hospital, where he was listed in critical condition.
The 22-year-old wrecker driver was heading south and had slowed partially in the left lane to turn left into the turn around lane when the woman hit him from behind.
Police say Flood's body was found underneath a mattress at the Great Western Inn motel last June. It appeared she had been dead for days before a housekeeping staff member found the body.