Speed Studio Design just posted their new Zoomla Concept.  With just a single pivot, it takes literally two seconds to fold up and put away.  Weighing in at 5 kg (11 lbs), it eschews a standard crank and pedals for a Pedaldeck that you simply mash down, presumably in alternating “pedals” to drive the rear wheel.  The “TorqSteer” helps turn the bike by guiding it around a turn, similar to a skateboard.  It can be fitted with an optional backpack to make errands and commuting easier.
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Click here for a previous post of other Speed Studio Design concept bicycles.