This seems a bit crazy but I was riding into work a few weeks ago (Wash DC) from Virginia when I saw a guy on a Beemer ride by and he had a bicycle mounted on the rear rack of his bike. It looked like he had attached one of the roof channel racks. He had taken off the front tire so the bike was sitting nose down and attached to an axel mount on the rack. I can't put a bike rack on my car and I thought wow that looks like something I need to investigate.
Has anyone else seen anything like this?