I had the thought of doing this and then a few days later I read the story of an elderly man with a broken hip with no ambulances available (not even given a long wait time, just told none available at all) and his family took him to hospital strapped to a plank of wood in the back of a van.
AIBU to consider buying some sort of emergency/folding stretcher online and storing it at home in case we're ever in the same sort of situation?