How have human beings become this dumb? Seems like in this day and age, you can't make movies that don't show and explain everything anymore. People don't even trust their own imaginations/assumptions, or people just don't have imaginations anymore. One reviewer said "If I wanted to imagine my own ending I'd just imagine the entire story!" except that he can't. You can't even use your brain to imagine an ending to a ridiculously simple movie, how can you imagine the entire story? Now, the movie itself, to me, was nothing to write home about. It's a post-apocalypse movie, post-apocalypse movies are like zombie movies, they are not to be taken seriously. They usually don't have sensible plot, they exist just for the sole purpose of entertainment (other than to make money of course), not awards season, and one viewing is enough. Just ignore the hype around this movie. Don't expect anything groundbreaking or original. Yes, some characters did do stupid things like characters in post-apocalypse/zombie/horror movies always do, but it's tolerable. If you can sit back and enjoy it for what it is, you might as well be entertained. I think if you watch it with this mindset you won't be disappointed UNLESS you are the type who want everything to be shown and explained to you all the time. In that case, no, you won't get an answer to where the young couple who ran away with the car ended up in, or whether they made it alive or not.
