DERBY, UNITED KINGDOM - FEBRUARY 24: Prince Charles, Prince of Wales, is shown how to drive a London Underground tube train during a visit to Bombardier Transportation, where he toured the facilities... more 

DERBY, UNITED KINGDOM - FEBRUARY 24: Prince Charles, Prince of Wales, is shown how to drive a London Underground tube train during a visit to Bombardier Transportation, where he toured the facilities and met employees working on London Underground tube trains, on February 24, 2012 in Derby, England. (Photo by Arthur Edwards - WPA Rota /Getty Images) less