In particular, not at the grocery store I shop at, they have no provision for it and they would ask me to bring it back outside if I tried. Even so it would not be more secure there than outside. There is no store security and the vehicles typically don't even have a key, alarm, or tracker built into them. They disappear easily.
They don't have baskets at this store. You have to use a push cart. This probably has something to do with the amount of theft that occurs in this area. I'm also probably not equally abled to you so a _bicycle_ is more useful to me and pushing that around a store with a cart getting groceries would be a ridiculous chore.
The world would probably be better if you didn't assume that everyone's experiences are identical to yours. Otherwise I can just keep using my gas powered truck to get groceries. I can easily afford that and it's "not a problem" for me.
An EV bicycle just seemed more considerate in several ways, and unless it has the features that speak to my needs, I don't see myself using one.
I don't know of a solution for the types of half-size carts common in small grocery stores, but I've seen people stash their scooters in the space below the main basket of full size carts
It seems like that would be difficult given its size. It's hard to secure something you can just pick up and walk away with if you can't lock it to something