I don't have the link, but I also remember reading this story. I tried googling but didn't have any luck either. I just wanted to let you know that you're not misremembering!
For a while I've wanted to build a big red "Ship it!" button (think emergency stop button). When slammed, it runs `git add -u . && git commit -m "Shipped!" && git push`
It can search for items, add them to the basket, picks a delivery slot and does the checkout.
With a little more scaffolding in markdown files, this now takes care of my weekly shopping.