You can't copy an engine made of steel, so copyright law is moot.
That's an interesting point, because you can literally build a copy of substantial portions of a car (engine, transmission, axles, brakes, etc.) from entirely aftermarket parts, for certain popular components. Many of these parts don't make any claims about licensing the designs from the original company but they do claim "drop-in" compatibility.
That's an interesting point, because you can literally build a copy of substantial portions of a car (engine, transmission, axles, brakes, etc.) from entirely aftermarket parts, for certain popular components. Many of these parts don't make any claims about licensing the designs from the original company but they do claim "drop-in" compatibility.