There's absolutely nothing for us to go off... We can't answer that question. If you can't add more details, I'm sorry, you'll need to find another site to try.
In the mid 1980s (before 1990, after 1984), I saw a US film. I recall that it was fairly depressing and had a lot of imagery (particularly the VHS packaging) of a car (perhaps convertible) on a dry lake bed. It was one of those typical 1980s movies with a young (20s) cast.
I'd swear one of the Phoenix brothers was in it.
You have no plot at all, only a vague memory of some "imagery". If you think one of the Phoenix brothers was in it, go look at their IMDb pages... you don't need us to do that for you.
Here are the sorts of details from our "on topic" page that are required for ID questions:
- Where you watched the movie or TV show
- When you watched the movie or TV show
- Any idea of how old it was
- Any idea of country of origin (if known)
- Whether it was animated or not
- Plot details of any scenes you remember
- Descriptions of any characters or locations
- Any distinctive detail
The most important of these is plot details, despite how low down on the list it is. You have absolutely no plot at all.
You also, in a previous version said:
I could be wrong about the dry lake bed, but it's the best I can go on.
Which is the only detail you have... and you just negated it it, which leaves
A mid-80s, depressing film with a car (possibly a convertible) with a 20s cast.
That's half the movies in the 80s.
I'm sorry, without more details, we can't accept this question.