The two men in the forest that are fleeing the hunters (and also fleeing the wolves) get into one of the several cars that were abandoned after being exposed to high radiation levels. They manage to start the engine with a few tries. Given that the nuclear accident happened three years ago, the car has been idle for three years, so it is impossible that the engine would start. One might think of the possibility that other rogue people have used the car in the meantime, but this is very unlikely, because there are several cars in the line (what a coincidence to choose the one that was recently used...) and the car is "perfectly parked" inside the line (people that used the car would probably not have parked it back into the lane).