People who write software shouldn't brag about making billions of perfect copies, or being able to make changes in hours, because that is just an aspect of their field which is inherently easier than automotive engineering. It isn't any process improvement that has made that possible, and automotive engineering can't simply copy the software engineering process to reap the same benefits.

Working in an easier field doesn't mean your field is more mature. Especially when there is such dramatic uncertainty in the schedule and the output is so flaky.