based on those tank sizes and MPG, 250 miles per electric charge is definitely a steal. I cannot imagine why solar could not trickle charge as I plan on doing that to a deep cycle battery in the back of my overland truck anyway to power miscellaneous things. Trickle charging is sooooo slow though that posting up for 30 minutes at a super charger may be the best route to go regardless. Interesting thought either way! getting rid of the combustion engine, transmission and etc would save you a lot of maintenance costs too! There is already a network of charges all around the interstate highways.