I'll describe a logo of a certain carmaker and your job is to guess what brand it represents. If it takes too long, I'll start posting photos.
A black prancing horse on a yellow background.
This carmaker in question cooperated with Fiat on some of its models. No, it's still not Ferrari.
The brand in question comes from Germany.
I painted over some bits, but that's the logo in question:
lonestranger got it right. It's Steinwinter.