There is something so impressive about industrial machines. I got to use an industrial serger once, almost 20 years ago, and I've never forgotten how it ran through four to eight layers of burlap and corduroy with perfect ease and how much fun it was to use. To be fair, I was in the throws of my first sinus infection and had had a headache for a week while working with casting resin and other fun but toxic things for 14 hours a day in hundred degree heat, so I may not have been entirely sane at the time. Theatre!
I'd be properly tentative now. A thousand stitches a minute is plenty for my needs.