You reminded me that electric home grocery deliveries have a longer history in the UK than people might think - growing up in the 1980s in the UK daily milk deliveries via an electric milkfloat were absolutely ubiquitous, and had been since the 1940s. The distinctive whining sound of a milk float pulling away, milk bottles chinking, was the definitive sound of a town waking up in the morning - diesel-motored vans chugging around first thing would have been incredibly annoying.
They are still used in the utility fleet space. However, they did not perform that well (range, reliability, high cost etc). It really was a natural fit for a Utility industry because of their access to the cheap electric power.
Oh that's cool, I'd never heard of it. I'm surprised there doesn't see much momentum in the area, although maybe there is a good practical reason for it.