There was one much more successful EV, although it too was niche: The UK had "perhaps 40,000 milk floats" in the 1970s and 1980s before supermarkets took over as primary milk distributors. ( https://zavanak.com/transport-topics/british-electric-cv-his... )
When I was a kid in Edinburgh no milk was delivered by ICE vehicle. It was either electric or horse. Also Sean Connery's first job..