Why have different tyre clearance for front and rear wheels? I’m sorry to be harsh, but such a decision on the part of a designer appears to me to be sloppy, ignorant or arrogant.

Likewise, the belt drive gaff. If a ‘gate’ is proposed to facilitate belt removal, it should be shown at this stage of the design process.

The elongated wishbone on the forks seems to serve no purpose other than to shorten the head tube and placing the head bearings closer together. Why would one want to do that?

Finally, if the goal is a tamper-proof bike, why have brake cables hanging out in the breeze for all and sundry to mess with? If these are hydraulic lines, less obvious routing would be a thoughtful touch.

Sorry to be a grouch. I’ll finish on a positive note, I like the motor idea. When living in China (’01-’04) I saw a lot of electric bikes. Not many of the people riding them were fat. I rode my regular, 1 speed Chinese bike everywhere, but on a 40 degree Celsius day, the folks on electric bikes probably got to work less sweaty than I. They rode electric bikes mainly because the city government put a moratorium on motorbike registrations. In an urban situation, electric bikes make more sense than electric cars, let alone gas guzzlers. 30-50 kg of personal transport makes more sense than 1500 kg. So, whether the riders are skinny or fat, I’d much rather share the road with more electric bikes and fewer cars. In my years of daily cycling in China, not once did I feel physically threatened by an electric moped!