People have too much time on their hands...
... they should consider spend it doing cool stuff like this ;)
and this: (funny thing, Jim and I had dinner with my friend Max and 2 VCs from a top tier fund 4 years ago, and we spent at least 1/4 of the conversation talking about this exact idea. Who knew someone would actually build it?!!) I'm not ashamed to say that I want them, only I don't think they would fit my Prius.
UPDATE: My friend Jonathan Lassof sent me a link to Spoke POV, an opensource (much cheaper) implementation.. for bikes.