Citation needed? They both use boxer engines, but Subaru certainly didn't buy the rights to use them. If anybody had the rights to it, it was Mr. Karl Benz who is the earliest known person to demonstrate a flat engine in the 1890's. Also, it's worth noting that the OP didn't seem to be labeling any specific entity as to who did it first, and indirectly referenced Ferdinand when listing VW. If you're going to play the part of Mr. Correction, correct a post that's actually wrong, and make sure you have your facts straight. I bid you good day.