Van den Driessche denied intending to cheat, insisting that the motorized bicycle belonged to her friend Nico Van Muylder and had been brought into the pit by mistake. Van Muylder publicly claimed ownership of the bike, but the UCI’s technical rules imposed strict liability: a prohibited motor could not be present in a rider’s competition equipment regardless of who owned it, whether it had been used, or whether the rider knew it was there. Video from the November 2015 Koppenbergcross was later scrutinized for suspicious-looking moments, including Van den Driessche accelerating up a cobbled climb while seated and apparently under less strain than rivals, although neither the authorities nor the rider confirmed that the motor had powered her in that race. Her sponsors threatened legal action, manufacturer Wilier Triestina said it would pursue those responsible to protect its reputation, and veteran Sven Nys expressed shock. Facing a costly disciplinary hearing in Switzerland and arguing that public opinion had already convicted her, Van den Driessche declined to defend herself, announced her retirement on 14 March 2016, and was retroactively banned for six years on 26 April 2016, from 11 October 2015 through 10 October 2021. All results from that period were annulled, including her 2015 European under-23 cyclo-cross title and 2016 Belgian under-23 championship, ending the career of cycling’s first athlete officially punished for mechanical doping.
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