The cab of a tractor-trailer was destroyed by fire Tuesday afternoon after it struck the back of a truck hauling cars on Interstate 95 northbound near the Fairfield-Westport border, between Exits 18 and 19.

The driver of the tractor-trailer had to be hospitalized for treatment of minor injuries.

Firefighters from both Fairfield and Westport were dispatched to the scene of the 3 p.m. incident.

"I pulled up and I was looking for the body," said Fairfield Assistant Chief Doug Chavenello, who expected more casualties given the damage to the truck cab.

The driver of the car carrier apparently never knew his vehicle was struck by the 18-wheeler, firefighters indicated, since it did not stop at the scene.

Firefighters provided medical aid to the driver, while others contained an approximate 25-gallon oil spill.

The driver was transported to St. Vincent's Medical Center in Bridgeport for treatment.

I-95 northbound traffic was stopped for approximately one-half hour during the operation.

A heavy wrecker had to be called to remove the wrecked tractor-trailer from the highway, according to fire officials.