I have yet to see anyone propose a standard that actually doesn't use more electricity(which comes from coal) to create a cleaner future.
Everywhere else, people are moving towards electricity for a cleaner future.
There are plenty of ways of generating clean electricity: nuclear, wind, tidal, biomass, hydro, solar ... even, if they get the budgets right,
"clean" coal with carbon capture (from what i've seen, I think the tech. works, but not the finances).
Secondly, even with mainline coal-powered generation, greater generation efficiency can mean that coal-powered electrical vehicles
create less co2/km than gasoline.