Pennsylvania State Police have identified him as 21-year-old Aiden Zeallor of Levittown, Pa.
He was shot in the head in the northbound lanes of the highway around 2:30 a.m. Saturday.
His red Ford Mustang and an abandoned white Acura were found at the scene riddled with bullet holes.
A third vehicle was also involved, but the driver fled before police arrived.
The driver of the Acura later showed up at the hospital with a gunshot wound to his leg.
Zeallor's death is being investigated as a homicide.