Bike motors were discussed fairly in-depth on HN 2 months ago; it seems to be this website&#x27;s ticket to the front page:<p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11247598" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11247598</a>