For hours, the vehicle was spotted dangling from a rope underneath the Millwood Overpass Bridge, south of Don Mills Road, on Wednesday morning.
Initially, police said they believed the odd sight was part of an ongoing movie shoot but later said they could not find a permit to support that theory.
Police say they will be looking into the background of the vehicle, but now believe it was intended as a prank.
First police believed it was from a movie shoot, but checked and there was no such authorized filming in the area, and no permits in relation to such a stunt.
He said crews managed to get the vehicle on the ground just before 10 a.m. - about three hours after the initial call came in.
Mayor John Tory told a press conference he was "mystified" by the whole thing. "I think it is basically green space", he said.
"Obviously you want to see our emergency responders, as they do with all the other situations, resolve it..."
Police said there is no hazard and no road closures are in effect in the area. "We took it away on our flatbed to one of our units for a forensic investigation".
Tory did not have any insight into who may be responsible for the stunt. "You're always very puzzled as to how a auto would have got into that particular situation".
Police urged that there is "no hazard" from the vehicle, as it isn't dangling over a busy roadway or another location that could harm people.
Authorities and onlookers have been left baffled by a vehicle hanging off of a bridge.
"So the danger is very high".