Two people were sent to hospital, one with life-threatening injuries, after their vehicle was struck by a stray tire that flew off a vehicle travelling in the opposite direction on Highway 174 early Thursday morning.
Ottawa police say the tire flew off a westbound vehicle in the area of the Blair Road exit just after midnight.
It struck a vehicle going the other direction.
Two people were taken to hospital, including one with life-threatening injuries.
The highway was closed until around 5:30 a.m.