A 46-year-old father is dead and his 18-year-old son is fighting for his life in hospital after their sportscar smashed into a tree in Mississauga late Wednesday night.

Emergency crews were called just before midnight when a 1986 Pontiac Fiero crashed and split in half at the intersection of Queen Street West and Shawnmarr Road at about 11 p.m..

The driver was pronounced dead at the scene, while his son was trapped in the car for an hour before he was removed from the vehicle by emergency crews and then airlifted to Sunnybrook Hospital.

Police are investigating whether speed or alcohol was a factor, but it's unknown why or how the driver lost control of the vehicle.

Both occupants are from Mississauga.