What it means is that your car is a rollerskate with a Thimble Drome. We can't get "green" energy to do transportation until we invent the magic battery, and that may or may not happen, and it may or may not be soon.
LED's? Ive had my eye on them for a long time, and right now a 60 W bulb is $10. Yeah, they last a long time, but its like saying that a Tesla at $100K is fuel efficient because it is electric. Yeah, it is, but it costs too much, just like $10 for 60 watts. And no, they don't last commensurately longer because there's always some power spike on the line, or lightning, or some-such that streeses or outright fries 'em over a period of years.
And of course we consume so much energy because 1) we do a lot of industry and 2) we are huge, and have a very large transportation burden that has to be satisfied with fossil fuels, we just don't know how to do it any other way.
I have a home loan in process right now to hopefully get geothermal heat in right now, and that is a cost-thing, not a green-thing since I got a 1-month oil bill for $833 earlier this year. F-that. Going all-electric with geo has gotta save some $$$. If it helps relieve some CO2 or some other green aspect, I don't mind, but that isn't the main objective.