I've always thought the Geo Metro was the American equivalent of the car i have, the Citroen AX. They are roughly similar, similar gas mileage, bare bones features etc. Here's a picture of my car to give you an idea.
After visiting this site those rear wheel arches are screaming for covers, especially as older Citroen's like the CX, 2CV, DS, SM had wheel skirts/covers as standard.