You don't need a drivers license to sail around the world, but you certainly do to drive a car in LA!
"Zac’s next challenge? Maybe penetrating Panama’s infamously dense Darien jungle, he said. Or sailing the rugged Northwest Passage. But first … um, he’d like to get a driver’s license. Yes, the kid who sailed solo around the globe said he flunked his driver’s test. We’re betting he’s up to the challenge."