In the mid to late 70's here in Adelaide there was a bike brand named Porsche, founded by a fella that owned a Porsche car. He got away with it for 3 years I think till the real Porsche found out and forced a name change. I only know him as Mr Richardson but he changed the name to Ricardo. I have the last and best Ricardo made.
I also have one of the original Porsche's around our property somewhere.