One appliance and crew from Amersham and one from High Wycombe attended.
A collision involving one car took place, the car was alight on arrival.
The firefighters used one hose reel jet and one set of breathing apparatus to extinguish the fire.
They provided immediate emergency care before passing him into the care of South Central Ambulance Service.
Thames Valley Police put a road closure in place.
The vehicle was 100 per cent damaged by fire.
