Chainless drive systems are nothing new. Besides the fact that the first bicycle was a chainless kick-powered ride, they've been on motorcycles and bicycles for AGES. My grandmother had a bicycle with a driveshaft and a differential.
This is nothing new.

EXCELLENT concept !
Lots of options for coordinating the pedal speed / force with current speed or lazily pedaling to charge the battery. Knowing what force is going to be applied back to the foot is a key input for keeping the bike upright. That's be a bit tricky to do.
Round trip efficiency from the pedals to the batteries to the motors doesn't really matter in this concept.

Stupid gimmick. Small generators are notoriously inefficient. A chain or belt drive can transfer over 90% of a rider's pedal power to the rear wheel. This electric drivetrain would be lucky to break 40%, and that would be extremely optimistic.

Since the pedaling charges a battery rather than driving the motor directly (even more electrical losses), why hasn't it got a couple of drop-down props at the rear to hold the bike upright when stationary so it can be pedaled while sitting at the lights, recharging the battery? Or the rider can sit at home watching TV while pedaling for tomorrow's commute?
Very inefficient. 2 out of 10. Unoriginal.

This may well be a gimmick at this stage ( have to wait to see how good it works) but at least it is a step in the right direction. I can not understand why no one has thought of this before, it is the obvious thing to do to use the power generated by pedalling to charge the battery. If this works and it is developed to the point where you don't have to charge the battery by plugging it in ebikes might almost be a good idea, but I will stick to my normal human powered device for now.

A shroud placed around the chain would be a much cheaper and more efficient solution.
Yes chains wear out but so do generators.

I think its a brilliant concept and if it works I want one. Yes its less efficient than pedalling but on the flip side all those downhills do nothing to generate energy whereas presumably this will charge on a downhill so thats a win. I want one!

As Pikeman suggests, a "shroud" is a much better and infinitely more simple solution for the chain -- millions and millions of old and new bikes have chaincases and many are on 8- and 11-speed bikes with wide gear ranges. There is not much "giz" in that, however, and somehow the author and designers think that all the tech in this bike will be less annoying that even an un-"shrouded" chain. Very odd.

At long last, just what we have been waiting for:
a beautifully designed exercise bike (that wastes almost half the energy needed to "power" it, and falls over when stationary).
All the rich kids that queue for iThings can be expected to queue for this baby too.

Already Having an ebike,when people are curious about it and ask,I find they often ASSUME it has a pedal driven generator!