Dramatically more convenient is having 3 grocery stores within 4 blocks, so you can buy groceries in small batches every other day, or wheel a wagon over for a larger load.
And a car is darn convenient for a family-sized weekly grocery trip.
Agreed. However the only reason I have to make "family-sized weekly grocery trip" is because there is nowhere within easy walking distance for quick daily grocery trips.
I have excellent delivery options but I want to see what I'm buying so I very much prefer driving to the grocery store. Even if 90% of the products are of the kind you can buy without seeing (detergents, canned foods etc) the stuff I need to see like fresh fish/fresh meat etc is so important for what else I'll need. I could probably get a lot of the recurring purchases delivered but I'm not going to shop for groceries any less than 2-3 times per week anyway.
But then if you follow this line of thought you can deliver the bulk and go only to the grocer for the smaller, easy to carry purchases. So, maybe, there is no need for the car anymore?