grandtanteJE65
Does you folding stool have a handle that can be raised to carry it by in the middle of the seat?
Mine does, so try tying a stout piece of washing line firmly to the handle.
Place the stool end on to the vehicle so you can place one foot on either side of the handle, which you raise before stepping onto the stool.
Once in the car seat, haul in the stool and collapse it.
I haven't tried this, but I am fairly confindent it will work.
I’ve tried this with a length of braid. It’s ok to get in but hit and miss trying to get the stool to open when lowering to get out. I’m currently experimenting with string threaded through a stout upturned plastic flowerpot after reading a suggestion on this thread about using children’s tub stilts. I think the poster was joking but it certainly gave me the idea for the flowerpot and I’m very grateful!