The picture was taken at the 1957 Milan trade fair. However the name of the vehicle is more elusive. At this fair they were referred to as PYE micro-taxis, but identical electric taxi's were used at several Milan trade fairs and were sponsored by Cinzano in 1952 and Durban's toothpaste in 1954.
I can't establish who made them or what their manufacturer named them, but I did find a company who has a restored example available to hire!