If I were retired and living in a small town, it would be very cool if all the local retail shops were on the same website, with a shared checkout system, and immediate bike delivery available on most items just by checking a box. Or maybe you could call a pedicab direct from the website, too.

I read somewhere that back in the old days, when downtown businesses were connected by pneumatic tubes, you could order from the local deli and they would send sandwiches to you via the tube.