You see them all of the place at the Ryder Cup: Captains and vice-captains for both the American and European teams riding around in carts to get from one place to another.
The carts are obviously primarily a mode of transporting these people -- and other guests and team associates -- around Hazeltine National. But they also transport goodies for the players themselves. Each cart has room for a cooler bag and snacks, so players can get a little refreshment whenever they need it.
In addition, the carts for the American team let everyone stay in touch with what's happening in the other matches on the course. Each cart for the U.S. side is equipped with a Samsung tablet that is able to stream the broadcast coverage of the matches.