Waiting for the car to sink and the pressure to equalize is an idea from someone who never ventured outside tropical climates. Cold water will zap your strength, oxygen, and ability to orientate yourself at an incredible speed. (Also, what if the water is very deep and/or murky?)I'm a fan of seatbelt cutter, glass breaker, and GTFO! As for the order and details, I think the reasoning in the link seems sound. The thoughts from people who have actually tested stuff generally bears more weight than Scientific Wild Assed Guesses.
Waiting for the car to sink and the pressure to equalize is an idea from someone who never ventured outside tropical climates....
I'm a fan of seatbelt cutter, glass breaker, and GTFO!