MONTE-CARLO, MONACO - MAY 24: Mercedes GP Executive Director Toto Wolff talks to Sir Frank Williams before the Monaco Formula One Grand Prix at Circuit de Monaco on May 24, 2015 in Monte-Carlo, Monaco. (Photo by Mark Thompson/Getty Images)
MONTE-CARLO, MONACO - MAY 24: Mercedes GP Executive Director Toto Wolff talks to Sir Frank Williams before the Monaco Formula One Grand Prix at Circuit de Monaco on May 24, 2015 in Monte-Carlo, Monaco. (Photo by Mark Thompson/Getty Images)