Not that unusual, especially in parking garages where the cars are parked quite closely. Cars are mostly plastic (petroleum) now rather than metal. Fire spreads fast and hot.
We carry millions in fire insurance in our auto repair shop. I’ve experienced a leaking gas tank turning into a flamethrower by an errant spark.
Destroyed the car, the hoist it was on and two adjacent vehicles. The heat and smoke damaged the shop wiring so we were closed for two months for repairs.
Ouch!!!
The worst thing I ever had happened in My shop back in the day was a Rolls-Royce Silver Shadow engine fire.
Worse was the clean up of the fire extinguisher mess.