MONTE-CARLO, MONACO - MAY 20: Mercedes GP Executive Director Toto Wolff signs autographs during previews to the Monaco Formula One Grand Prix at Circuit de Monaco on May 20, 2015 in Monte-Carlo, Monaco. (Photo by Mark Thompson/Getty Images)
MONTE-CARLO, MONACO - MAY 20: Mercedes GP Executive Director Toto Wolff signs autographs during previews to the Monaco Formula One Grand Prix at Circuit de Monaco on May 20, 2015 in Monte-Carlo, Monaco. (Photo by Mark Thompson/Getty Images)