A number of embodiments of low, stable, self-propelled vehicles adapted to carry disabled, infirmed or elderly persons. In each embodiment there is provided a load carrying floor that has its upper surface spaced below the axis of rotation of the rear wheels and which may be raised and lowered for facilitating...http://www.google.fr/patents/US5094314?utm_source=gb-gplus-shareBrevet US5094314 - Low slung small vehicle
