Again you pulled that out of your butt. Parts are stamped out and very little human contact needed.
The engine block is the largest most complex car part. Here is video of one being made. It is 99% automated. Watch it!
Rush made a generalization. You don’t like it. You are welcome to your opinion but not the assumption that you are any more of a cost analysts than Rush.
I included my 45 year history in construction cost estimating and explained that “Labor” in general is a very non-specific term. R & D costs and engineering costs are mostly labor and the indirect overhead, like healthcare, that follows each hour of labor, but they aren’t generally viewed as manufacturing labor.
I am not going to automatically agree or disagree with you or Rush, I am pointing out that it is a generalization and not something of fine detail except in a very specific instance.