Photo by Michael Alexander.

Today six U.S. cities (and Toronto, but who cares) have access to the most cherished dream of every American child: ON-DEMAND ICE CREAM. This changes summer forever.

Uber, the start-up that will send a livery-service car to you at the touch of a smartphone-app button, is expanding for one day into ice cream. Touch one little button on your iPhone and it will, as it promises, “BRING ON THE ICE CREAM.”