

The parking lots themselves are a big cost to the rest of us though. At least they could be offsetting some of the environmental costs of sprawl.
Plus the electricity production should offset it in a few years, especially in the places wheee shaded parking is most desirable.
There was a MacBook 12 inch like this that my business partner loved. It would last all day on a charge and he was building our app with it (Xcode and I think clang builds).
This was 10 years ago though.