Wikipedia lists VO2 max levels for the average young untrained male of about liters/minute or 45 ml/min/kg. In comparison, world class male endurance athletes in sports such as cycling and cross-country skiing typically achieved scores in excess of 80 ml/kg/min, and occasionally a few may exceed 90 ml/kg/min. The average young untrained female will score about liters/minute or 38 ml/min/kg compared to world class female endurance athletes which a few may exceed 70 ml/kg/min. See also some VO2max results for athletes for specific examples for a range of sports.
Lance Armstrong was without a doubt, one of the most inspirational athletes of all time. The fans could relate to him as a cancer survivor, but they were also impressed by him famously ‘winning’ the Tour de France seven times. Unfortunately, tests conducted on Armstrong revealed that he had been using performance enhancing drugs throughout his career, despite Armstrong repeatedly denying the accusations. He was promptly stripped of all seven of his Tour de France medals and not only lost tens of millions of dollars, but the respect of the majority of his fans as well.