The historic Peking to Paris rally is the most challenging endurance test for classic cars (and their owners), delivering an experience that is unparalleled in the crowded world of vintage-auto rallies. This year marks only the fourth time that Peking to Paris has been run since the inaugural rally in 1907. After the inaugural race, international relations made traveling through multiple countries virtually impossible for a 90-year span, but in 1997 the rally was revived by the Endurance Rally Association; it …