I've seen those! I always think that I'd use one if I could but then I fear extreme mortification as I figure out how to get my bike on and off the damn thing while the WHOLE BUS and EVERYONE AROUND ME watches.

I'm sure there will be many bike-rack-associated-delays and shenanigans as people who would use them figure out what the fuck they're doing.

Just remember to give those suckers a wide berth lest you want matching scars.