The Flextreme represents Opel's idea for a small, practical transporter with very low emissions, a major theme among carmakers at the 2007 Frankfurt auto show. Notable features are the transparent roof and the headlight enclosures, which wrap all the way down to the fog lights.
Yes, those are two Segways, stored in special compartments at the rear of the car. Opel's idea is that you may want to continue low-emission travel after you stop the car. The rear gates also swing out in a fashion Opel dubbed FlexLoad.
Near the Flextreme exhibit, GM had an example of its E-Flex architecture. This system, first seen in the Chevy Volt concept, uses electric motors to drive the wheels, which get their electricity from big lithium-ion batteries. The batteries can be charged by plugging into the grid and from an onboard independent power source. In the case of the Flextreme, that would be a 1.3-liter turbo diesel generator.