Release date: The person who is looking for it, saw it in 1991.
Country of origin: Don’t know. Hungarian dubbing, mostly Caucasian actors.
Info about the car: Some kind of off-roader. Mitsubishi, Toyota?
It’s supposedly a true story.
All three people were about 25-30 years old.
For some reason, they drove off the tarmac and couldn’t find their way back.
A lot of screentime was dedicated to them trying to find the road markers (empty barrels?).
It ends with an off-screen narrator saying that 15 years have passed since they’ve disappeared and they haven’t been found since.