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World’s first off-road solar car ‘Stella Terra’ succeeds in cruising from Morocco to the Sahara
(www.designboom.com)
This is a most excellent place for technology news and articles.
It's also a way for people who regularly travel less than 20 miles (if this number is correct).
Most device consume more power than you can realiable get from solar on the device. You can't power a cellphone from a back-mounted solar cell nor run a car from a solar roof alone.
But don't make the mistake to assume that everyone has (cheap) power at home or that everyone has a (suburban) home. Photovoltaic is cheap and reliable. And you need space, so it makes sense to put solar everywhere.