Here's a silly thing. I can't say too much in case matey identifies himself.
I have a friend who happens to be a professor in a physics department at a leading British university. He has been this for a lot (really a lot) of years. He has three doctorates. God knows why.
He has a big interest in cars. He had been to see a new thing where the power steering was all electric, and was telling me how absolutely fab that was.
I asked why. Cos I'm stupid like that. He explained that because it was electric it didn't use any fuel.
You can see this coming, can't you?
I pointed out that the electricity has to come from somewhere, very possibly by the alternator in the car recharging the battery, perhaps, using the power from the engine, which uses fuel? He said "no," because he is a professor of physics.
I just despair sometimes.