Three of the four interior panels look ok, and re-usable. But the back of driver side door panel is broken and flimsy. I think the vinyl could be cleaned, and would probably still have some life in it.
The backing looks like masonite. If I can safely separate the vinyl from the backing, I think I could get a piece of masonite from Lowe’s or Home Depot and use the existing backing as a template for making a new one.