Lugers Natalie Geisenberger, Tobias Wendl and Tobias Arlt became the first German athletes to win six Winter Olympic gold medals with a mixed relay win on Thursday at the Games in Beijing. Germany completed the sweep of luge gold medals at the Beijing Olympics, clocking 3 minutes 03.406 seconds to set a new track record, but only in the last run with doubles pair Tobias Wendl and Tobias Arlt. “It is just an amazing feeling, like a dream. This team is amazing,” Wendl said. Silver medallists Austria put down a phenomenal challenge and were ahead of the German team after Beijing champions Geisenb…