It was around 1:30 a.m. when the car was traveling southbound on Delaware Avenue near Chestnut Street. Police say the driver somehow lost control of the vehicle. The car then crossed the grass median, flipped over and hit an oncoming car.
The passenger in the vehicle that rolled over was ejected onto the highway. He is now in critical condition at Hahnemann University Hospital having sustained multiple injuries.
The driver of that car fled the scene, and hasn't been found.
No other injuries were reported.
Investigators are still trying to figure out what caused the driver to lose control.