I'm wondering why the roof and trunk of Tesla cars aren't covered with photovoltaic cells. It seems to me that, from an energy conservation/efficiency point of view, PV would make a lot of sense. I don't think it's possible that the idea simply wasn't considered. Was it a physical integration or other design problem? A cost/benefit issue? (Please don't tell me it was purely cosmetic.) It's just something I've been wondering about for a while.
I really love what you guys are doing. Keep up the great work!