The e-bike without a chain

The Mando Footloose is the worlds first chainless electric bike. Batteries are stored in the frame and the pedals are linked to an alternator to generate electricity while you pedal. When you have arrived at your destination the bike neatly folds down to a manageable size.

However it will set you back around £2,000 ($3,200) if you buy it.

And as Spencer Kelly discovered when he took one for a test-ride in London, not having a chain does have its drawbacks.

More at BBC.com/Click and @BBCClick.