Hello to all,
I look for a film I watched on cable television in my 90's childhood.
It is a post-apocalyptic film where the atmosphere outside is toxic (or just unbreathable), people live underground, going up is forbidden.
I'm afraid I don't remember too much, but I do remember that near the end of the film someone or maybe a couple is/are chased and escape in a car with an oxygen tank (for an obvious reason), drive up in what might be an empty underground parking garage (the way up to the surface). They reach a dead end, but drive through a concrete wall which was a hologram, they pass right through it to the outside world, pretty much a desert as can be expected. The holographic wall was made to prevent people from going out to the surface.
Afterwards I think the "bad guys" keep chasing after him/them to outside as well. The main character eventually runs out of oxygen and maybe finds out the air is breathable after all? I'm not sure...
Hope I remembered enough details, I really don't remember this very clearly...
I'd like to thank in advance to all repliers!