That last picture is a concept car made from a Smart Car by a german engineering/tuning outfit called Rinspeed. The aft portion of the car, where the rearmost wheels are, is a detachable powertrain module. One module is an electric drivetrain, the other is a conventional gas drivetrain. At least that is how I remember it.
Lots of concept cars at this show, but also a lot of nice production cars from Skoda, Renault, Citroen, Alfa Romeo, Peugeot and other brands that don't come to the US. Lots of station wagons as Europeans never bought into SUVS as substitutes for wagons.