Last night the girls and I were out for a walk, meaning I was walking and they were riding in the wagon. We passed a couple of ladies in their 80s. One of them said "I had a wagon when I was a girl and I loved it" and she gave a big grin. My older daughter then got out and began pulling my youngest in the wagon, running while the baby chortled and giggled at the wind whipping through her hair and her bum bouncing in the wagon.
The wheel was invented circa 3500 BC and I suspect wagons came soon thereafter. Wagons are wonderful.