I can’t believe there isn’t a thread about this yet. At first it looked like an outlandish April fools joke, but it looks real, doable, and scary. 100 watts of extra power for 1-2 hours, and it weighs only 1900g. Who knows how long these may have been in use.
The “Gruber Assist” gives a whole new meaning to “a MacGruber setup.”
http://www.cyclingnews.com/news/uci-denies-reports-of-motorised-doping