We discovered that there was an explosion of some sort inside the car on the passenger side, which seems to have potentially involve the air bag system and/or electrical around the system, but this is not entirely known. The car was parked at the time and had not been driven for approximately 65 hours. It appears there was a fire but we did not witness. The dash is melted leaving a gaping hole, what appears to be portions of the air bag are partially disintegrated and stuck to the ceiling, the ceiling is charred, the sun visor is melted and distorted, and hanging down, underneath the dash is also melted, and the smell in the car is absolutely stifling. The windshield is shattered in one spot, with additional cracks stemming from that point of contact. The windshield is damaged from the impact from inside the car and is pushing out. The car was locked, there is no evidence of forced entry or attempted forced entry. It has never been in a collision. The car was parked three feet away from our motorhome in the confines of our RV spot at an asphalt campground. The safety of all in the area was at risk, and furthermore, since this explosion was unprovoked, if we had been in the car at the time, it's unimaginable as to what sort of bodily damage the passengers, especially the passenger seat occupant, would have incurred. I do not believe the problem can be reproduced, but the car has yet to be inspected. I am currently awaiting insurance to take the car via tow truck to