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The eCVT (HSD) design does not convert all input mechanical energy to electricity. Read about the Prius drivetrain to get an understanding of how the design works. It can just as well be applied to a bike. The real beauty of the eCVT is that its "gear ratio" can go to infinity in either direction. That is, it can operate in EV mode with the pedals stationary and allow the pedals to charge the battery with the bike stationary. In normal operation, it can also measure mechanical power very accurately by measuring the currents and frequencies. Therefore, it can measure how much effort was put into riding the bike - which was a frequently asked question with no clear answer.
Another advantage is that it is possible to only extract power during efficient pedal angles. And if it is a bicycle built for two (tandem), the two riders can pedal at different rates if there are two PSDs.
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If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler...
Allie Moore and I have a combined carbon footprint much smaller than that of one average American...
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