I do have a shoping cart, but it wouldn’t last long if I had to pull it behind me for a mile, several times a month. Besides, the buses frown on them...they block the aisles and pose a hazard to passengers.
The one I have is used mostly for taking my laundry to the laundry room, which is a block away.
But it’s a good idea. I see one old person (I can never tell if it’s a man or woman) who has his/her O2 tanks in it, along with a pillow and blankets. Probably a dialysis patient.
Riding buses can be entertaining... ;o]
I rode buses when I was in college. Did homework during the two-hour commute. Blech.