SHANGHAI (AP) — Ferrari's new team principal, Marco Mattiacci, arrived at the Chinese Grand Prix on Friday wearing large sunglasses — on an overcast day. There was a reason, he said, and it didn't have anything to do with vanity. "If you do, in less than four days, almost 40 hours of flying and you don't sleep in the last four days, probably you need sunglasses," he said. It's been a whirlwind week for Mattiacci, who became principal on Monday when Stefano Domenicali quit after the team's poor start in Formula One. Mattiacci, the former president of Ferrari North America, said he received a call from Ferrari chairman Luca di Montezemolo last Friday at 5:58 a.m., to be exact, to discuss the job, and hours later he was on a plane to Milan.Read more on NewsOK.com