Having fire extinguishers in cars is dangerous

Carrying a fire extinguisher in a car is likely to be counterproductive and dangerous.
Modern cars contain many materials that are highly inflammable, and in some cases very toxic. Recent videos of car fire demonstrate just how quickly fires in cars can spread. The only safe thing to do if your car goes on fire is to get all passengers out and abandon the car as quickly as possible. Attempting to fight the car fire with a small fire extinguisher is foolish and dangerous.