I left a comment on the author's page (awaiting moderation), but I'll copy it here: if you're going to try this at home familiarize yourself with local laws. I

I left a comment on the author's page (awaiting moderation), but I'll copy it here: if you're going to try this at home familiarize yourself with local laws. I'm all for getting more people on bikes, but some of the suggestions he makes are illegal in my state. Be aware of power limitations, braking requirements, and how the resulting vehicle would be classified (and should be labeled).