The America's Cup, the world's oldest sailing competition, has a reputation for fostering innovation. In 2013, contestants began to use hydrofoils-underwater wings on the hull-to lift their boats out of the water during the race, allowing them to reach highway speeds and revolutionizing the sport. An Olympic sailor and a billionaire oil trader are now reimagining the technology to make passenger ferries faster and more eco-friendly. Learn more about your ad choices. Visit megaphone.fm/adchoices