With a 40km range and top speed of 20 km/h this invention looks set to give extra freedom and independence.
See: http://riomobility.com/en/ for variations and further information. Apparently, they are the developers of this equipment.
The video was uploaded by rollickbiz, who import this type of equipment. They are an European company, I believe. Their website is http://www.rollick.biz
I applaud the inventor and thank rollickbiz for helping us all to find out about it.