so where does all this great electricity come from?
Mostly, biofuel plants (burning trees - more C02), coal (even more C02), some nuclear, some of it hydro, more natural gas (more C02), and it's all assembled by robots run on electricity.
And, oh, by the way, you have to buy something new, you can't convert an existing truck either. Buy! Buy! Buy! Consumerism at its finest.
So, tell me again how this is saving the planet?