Everything mechanical has moving parts, even an EV, did you forget....😉
ICE engines can be reconditioned, I have done many....
My friend has a 1969 Plymouth Barracuda 360ci (5.8), I rebuilt the engine for him, he's just moved down to Cornwall, he drove it there from London, he said it drove like a dream, I said the engine rebuild was OK then, he said, you rebuilt it 20 years ago........I said, blimey, time fly's......🤗