I think I saw this movie at least 10 years ago, maybe more. I think it was in color.
The dialogue was all in English, with American actors.
A young actor like Christian Slater co-stars with an young woman driving in the desert. In a particularly memorable scene, they stop for gas. She drives off with gas nozzle still in her car which rips it off the gas pump. She returns to the gas station to fill out some forms. The gas station attendant asks “What were you thinking about?” and has her write it down. Much later, it turns out that she is actually in a coma and her experiences in this place are not real. It has some dark humor. Most of the scenes take place in her coma-delusion, in a strange depopulated, somewhat dystopian world. This takes place in current time, not the future. The dark humor was particularly funny and off-beat. Most of the people she meets in this somewhat dystopian world seems unaware of what seems to be happening to them and around them. For most of the movie, neither she nor the audience is aware she is in a coma. This was all live action, not animated. There were little if any horror elements. The humor was quite dry and quite extensive throughout the movie. I think that the young man and the young woman driving through the desert or wasteland did not know each other until they met in this coma-world. He might have been a hitchhiker she picked up along the way. Gradually, a love blossoms between them. Neither we (as the audience) nor the female protagonist are made aware she is in a coma until near the end of the movie. We know for sure she was in a coma because she awakens from her coma at the end in the hospital. The main characters were young and quite likeable. It was a haunting and thought provoking movie, though funny and never preachy.