An electric vehicle charging station taking live payments with IOTA was demoed at the Amsterdam meetup
Close up of the demo they used live at the event. It would activate when you plugged in the charging cord and the cell phone app would pay X amount of IOTA per KiloWatt hour and the app will have a search function to find the nearest charging stations. The proof of work is offloaded from the cell phone and would eventually be done by the companies servers to keep the POW fast and light for users.
Follow the discussion on Reddit: IOTA EV charging station by ELaad demoed at the Amsterdam meetup. Taking payments live with IOTA