With most floods there is a lot of water flowing and many people think their tyres will magically stick to the road. Once you get washed off the road the tumbling may start, a stationary tree or pole becomes very dangerous, getting wedged risks submarining. If you are lucky and can get out it still ain't over. These same people often have a similar false perception of the dangers of fire and smoke around them. It's a complete disconnect from reality and generally outside most people's realm of experience - stretching the truth in commercial advertising of their vehicle's capability doesn't help either.
The escape tool is handy for breaking the windows when your car has caught fire (usually after an accident) and the doors/windows won't open, but you need to not sustain any major injuries in order to use it. We have a story in my part of the world in the late 90's of a doctor purchasing a brand new BMW 7-Series and subsequently loosing control in a turn and hit a tree head on at a remote location. He survived the crash but the car caught on fire and the doors and windows wouldn't open. His charred body was found in the back seat.