You could phone the auto-parts store, describe the key, and ask if they can make them. Doesn’t cost anything to ask!
(Sorry if I sound like I’m talking to Bill ;-).
It looks like a key blank, but has pits in the flat sides. Most key machines are made to grind one or two edges of the keys, but not the sides.
I was looking for key shapes, but couldn’t see anything like it. Of course, since it looks like a key blank. LOL!