First things first: Yours is a straw-man argument. I said that electric cars are not "green energy" because it matters how the energy is produced. You, however, argue for the better efficieny vs. combustion engines. I did not even MENTION combustion engines. So watch your tone, dumbass :p /s

Regarding your straw-man, I'll bite:

Efficiency of an electric car is up to 65% including losses when charging. Efficiency of a Diesel powered car is up to 45%. Producing a liter of diesel costs about 1.13 times as much energy as is contained in a liter of Diesel fuel, which - even assuming 100% efficiency on winning that energy - is further bringing down the efficiency to 45% * (1 / 2.13 ) = 21% (one unit gained per 2.13 units invested). A coal power plant is at best reaching 45% energy efficiency, bringing the overall efficiency of an electric car down to 65% * 45% = 29.3%. That makes an electric car operating on coal generated electricity about 29.3% / 21% = 1.395 or about 40% more efficient than a Diesel powered car.

And this does NOT include that electrical vehicles are - due to the weight of batteries - around 50% heavier than combustion engine cars, and that battery life is much shorter and then generates a lot of electronic waste.

Accordingly:

The dirtiest, least efficient coal power plant is still IMMENSELY more efficient than a car combustion engine

Not true. Numbers for the most efficient coal power plants are just about equal with the efficiency of the best Diesel engines. But even moderate Diesel engines stay around 40% efficiency, whereas coal plants can be in the 30%-40% range easily.

When you don’t have to make your energy generating device mobile, you can get a LOT more power from your fuel.

1. generally, larger generator = better efficiency, yes, however:
2. see above: this does not necessarily hold true when the batteries increase the total weight of your car by 50%

While - all things considered (I honestly did not expect the production of Diesel to be quite so energy-inefficient) - electric cars fare better if driven at constant speed (or with good energy recuperation mechanisms on braking) and not taking into account the battery life, energy investment into that and chemical waste produced on production / disposal, they are far from getting "a LOT more power" from an "IMMENSELY more efficient" power plant.

Maybe spend some time learning about a subject before you make claims about it. There’s less chance of looking like an ignorant fool that way.

Likewise.