No charges yet after a boy in his early teens was struck by a car on Danforth, west of Midland.
The boy was taken to Sick Kids Hospital in Toronto in serious, life threatening condition.
Toronto EMS say the boy was breathing, but unconscious en route to hospital. They were concerned about possible head injuries.
The driver of the Hyundai remained at the scene, and is co-operating with police.
It happened just after 4 o'clock on Tuesday afternoon.