Humans can weave cotton cloth with great effort, but automated looms make perfect cloth by the mile for a few cents per pound. The only reason to buy handmade cloth today is because you want the imperfections humans introduce. There’s very little reason to want an imperfect car. We no longer value irregularities while traveling 70 miles per hour on a highway—so we figure that the fewer humans touching our car as it is being made, the better.