[Sebb767]

> that I could easily burn in my car, tractor (with PTO generator), or whatever.

Or in a generator, for use in your EV :-) Whereas it will be hard to run your diesel car or tractor on solar power.

[_hyn3]

It will take quite a long time to charge an EV on solar power (or off a portable generator). The power density is just very inefficient compared to the huge mass of the batteries.