I'm trying to figure out the title of a time travel movie that took place in the desert. Probably from the 90s?

I remember the main character saving a kid from a car with his family inside because it was going to blow up or something. I remember a gas station, people being shot.. I dunno, someone help me. I think the end of the movie actually took place in some building in the desert they kept having to get to.I'm trying to figure out the title of a time travel movie that took place in the desert. Probably from the 90s?
it could be retroactive with james belushi





A woman, whose car breaks down on the highway, is picked up by a crazed stranger and his obviously threatened girl friend. Despite potential escape opportunities, she stays with the couple who is involved in some kind of unexplained thievery involving a computer disk. After a series of murders, including the girl friend, the woman manages to escape to a scientific lab where time travel is being experimented with. Here she asks to go back in time to try to stop the killings. Repeated attempts results in the same deaths.





here is the plot