Wake Forest just published a paper in Applied Physics about their plastic
solar cell project. They just broke 6%.. it means that if one were to
"paint" the top of a westy with it, it's max output at 12 noon on the
equator would be around 42 amps or so at 14V.  Cost is the preclusion, but
it'd be cool, looks like the stuff is still 5 years away from consumers yet,
as they apparently need to at least double that 6% to really make it
competitive. In the meantime, using some roll out solar cells as an awning
might be cool but not worth it.

http://www.powerfilmsolar.com/

Jim Akiba