Recharging will always be an issue
When recharging is used, EPA's current mileage formulas are clearly inapplicable. What might be better would be to show mileage per BTU of energy used, which you can calculate for all fuels as well as electricity used for charging. What everybody in the electric car frenzy forgets about is that these vehicles, great as they are, will put lots of additional load on the electrical grid - a load that many experts say needs to be reduced (not increased), as electrical generation is a major source of greenhouse gases, coal ash, nuclear waste, and other pollutants. Electric and hybrid cars are great but are only a part of a total energy solution.