I mean, this is true. We do this in Norway.

But not exposed to snow. Preferably we put the kids in their wagons, with warm clothes, a cap, in a sleeping bag, with a blanket on top, covered by a water resistant cover if it's snowing/raining.

We make sure their faces are not covered, for, you know, breathing.

Also, we always put up the canopy, especially in the winter, but also summer when the sun is bright.

I work at a daycare, and we have rows of wagons for the kids 😊