The car and the tractor-trailer collided around 11:00 a.m. in the southbound lanes of I-95 near Route 352 in Chester.
State Police tell Action News a mother and her adult daughter were in the vehicle.
The mother was freed from the car and was taken to Crozer-Chester Medical Center with minor injuries.
The daughter was also taken to Crozer for evaluation.
Wtnesses tell Action News the car was under the tractor-trailer and was being dragged. This went on until the driver of the rig noticed the vehicle was underneath his trailer.
The driver of the tractor-trailer was not injured.
All involved were wearing seatbelts.