It left me in a bad mood because of how stupid it is.
There were four (that's 4) adults in that car. Supposedly the most rational ones. And nobody protested on this? They all agreed? After all they went through to save their lives?
The answer i usually get is that they were desperate and "you don't know how you would feel in that situation" etc. Which is very predictable. But again, FOUR people. At the very least one would say, nah, fuck it, i rather wait until the last second for something to happen. Heck, i would expect at least one to be afraid to kill themselves. It's not like everyone has the courage to do it. But they all just agreed and they all seemed to have the same emotional reaction to it. No panic, no fear, no second thoughts, no last second remorse, no nothing. Let's just kill ourselves.
It's another movie that tries to convince you suicide is easy. Same with people sacrificing themselves, i see that in every other movie. Basically, characters in movies don't value their life much.
Oh and that wasn't the book ending. No surprise there.