Coverage from Mustang Million 2013 can be seen on the late-night news program. Georgetown, Texas, Dec. 12, 2013 – In preparation for the premiere of “Mustang Millionaire” on Nat Geo WILD this Saturday, “Nightline” will broadcast a segment about the reality show on ABC, Dec. 12 at 11:35 a.m. CST. Check local listings for program information.