A general view is seen of the mosque in Frejus, France, September 16, 2016. REUTERS/Jean-Paul Pelissier

France's far-right National Front political party mayor of Frejus, David Rachline poses during an interview with Reuters in his office in Frejus, France, September 16, 2016. Picture taken September 16, 2016. To go with FRANCE-ELECTION/LEPEN REUTERS/Jean-Paul Pelissier

France's far-right National Front political party mayor of Frejus, David Rachline talks during an interview with Reuters in his office in Frejus, France, September 16, 2016. Picture taken September 16, 2016. REUTERS/Jean-Paul Pelissier

A general view is seen of the town hall and the Saint Leonce cathedral in Frejus, France, September 16, 2016. REUTERS/Jean-Paul Pelissier

People view a Tesla car during the Auto China 2016 in Beijing, China, April 25, 2016. REUTERS/Jason Lee/File Photo

FILE PHOTO -- Elon Musk, Chairman of SolarCity and CEO of Tesla Motors, speaks at SolarCity?s Inside Energy Summit in Manhattan, New York October 2, 2015. REUTERS/Rashid Umar Abbasi/File Photo

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., September 15, 2016. REUTERS/Brendan McDermid

German Chancellor and chairwoman of the Christian Democratic Union (CDU) Angela Merkel reacts before a party leadership meeting in Berlin, Germany, September 19, 2016. REUTERS/Fabrizio Bensch