Chopper 6 first flew over the scene near the Montgomery Drive exit in Philadelphia's Fairmount Park just after 7:30 p.m.
Flames spread from the car to some brush on the side of the highway.
Luckily, crews did not report any injuries.
The area drought has lasted more than a month. That, combined with summer-like heat, continues to fuel brush fires on both sides of the Delaware River.
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Three other brush fires have recently ignited in the region.
One blaze broke out near Bucks County Community College's Bristol campus. It has since been continued.
Firefighters have reached 90% containment on another fire in Evesham Township, Burlington County.
Crews in South Jersey are battling a 100-acre wildfire in Downe Twp., Cumberland County. That fire is 0% contained, but the New Jersey Forest Fire Service says crews are using a backfire operation to help contain the flames.
Fire officials hope everyone will adhere to all burn ban restrictions.