So the grocery store in my little town growing up was the last hold out. They had ash trays in their buggies until they legally couldn't, then kept the buggies for years after.
And back in the 80s, a cart was something you pushed at the grocery store, not something you smoked. And a buggy was a hardware cart that you’d deploy to go shopping, and then when you were done you’d roll it back and get your quarter back.
I think it was probably very location dependent. I know the Skaggs where my mom worked did, plus the little affiliated grocery store in my town. But I don't remember them at Kroger or Piggly Wiggly (back when that was a thing there).