Seen on TV in the 90’s. In English. Color (I think). A group of teenagers/twenty somethings(?) spend the entire movie attempting to escape a labyrinth of underground bunkers. I think some of them die. Finally at the very end of the movie they emerge in the middle of a desert near a road. A futuristic car is driving toward them and stops. There was a family in the car. The parents get out and the people think they are rescued (maybe there are two people left). The parents are like “sure we’ll help you, come back here.” They lead them to the back of the car and stuff them in the trunk. They were using them to fuel the car. The last scene is the parents saying “gee good thing we ran into them, we weren’t going to make it!” And they drive away.