I mean for those of us for whom (is that right? for whom?) powered chairs aren't really appropriate and our LOs are getting a bit heavy.
I've just jerry-rigged an arrangement of straps so that if there are 2 adults in the party, one can pull and the other can push. But that's not going to work forever, is it? What am I going to do when DD1 is 18 and I have to get to the top of the high street with her?