The little red stroller

Shortly after her birth, a little girl named Luna is give a red stroller that she and her mother use to go places together. When Luna grows too big for the stroller, she passes it down to her neighbor Ernie. Ernie passes the stroller on to Gigi who passes it on to Callie. The stroller is passed on from one child to the next and travels with their diverse families on many outings until it can go no further. But the tradition of sharing continues with a yellow stroller which eventually makes its way back to Luna who is grown with a baby of her own.