This little bike was introduced at Interibke last week. It folds very compact in 2 to 3 seconds, comes with 3 speed Sturmey-Archer internal gearing, transport handle, disc brakes, 12 inch tires, and folding pedals.
It seemed very well built, but I did not see it as a practical transport for a lengthy ride. It weighs in at around 28lbs.
For more information: http://www.mobiky.fr/genius/en/Genius_technical.html
Cost? Around $1000 retail.