Rhino SuperCart designs and builds the best athletic training, hydration, and utility carts right here in the USA. Our History: Rhino SuperCart traces its roots to 1968 when Utah State University basketball coach Dutch Belnap designed and built a steel cart to help him manage his equipment and treat his athletes. He called his invention the MAC-5 and you can still see some of them in use throughout the intermountain west. Fast forward 30 years to 1998, Dutch teamed up with Weber State athletic trainer Joel Bass to launch the re-designed Rhino-Med cart. Over the past 23 years we've expanded our product line to include hydration and utility carts. You can now see Rhino Carts in action throughout the country on the sidelines and in training rooms, and wherever an Athletic Trainer demands the best.