Thomas Linn was driving on Route 40 in Richland Township, New Jersey at about 3:00 p.m. Friday.
Police say the car in front of Linn's had a tire blow out, causing the driver to lose control of the vehicle.
The car hit a telephone pole and flipped over.
The driver was able to get out of the car.
Linn, however, rushed to help the man when he saw him trying to get back inside.
Moments later, the car caught fire.
"I went over to him and said, 'sir, can you please come with me,' like really nicely and he's like 'oh, I don't know what happened' and we walked a couple of feet and the car actually blew up," Linn said.
Linn said the man was disoriented and complained of chest pains so he was taken to the hospital as a precaution.
One of the firefighters called to the scene to extinguish the blaze was Thomas Linn's twin brother David.