^^^^ One conveyance for inside/outside the store is a neat idea, but wouldn't float in most cases in the States. Stores here frown on shoppers putting merchandise in their bags or other conveyances before paying, out of concern about shoplifting. Plus, those are very small wheels to run at 10-15 MPH / 15-25 km/h. If the "sociology" were different here, and those wheels were 16"-ers, it would work.