Police say a car blew up when some genius lit a cigarette after dousing himself with an aerosol body spray inside a catering vehicle somewhere in Maryland.

The combination of cigarette-and-spray caused "a sudden and violent expansion of the air molecules" in the car, creating an explosion that blew the roof up, shattered the front window and blew the doors open.

The driver appeared unharmed and was taken to a hospital to check for hearing damage, but police say that the man was taken to a burn unit with serious injuries. The man's name has not been released.