Opel Flextreme GTE concept

The highlight of the Opel stand at the Geneva Motor Show this week is clearly the new Flextreme GT/E concept. This second Flextreme-badged concept is the first midsize car to be powered by General Motors' Voltec powertrain ...

Think of the Opel Flextreme GT/E concept as a bigger Chevrolet Volt (or Opel Ampera if you're European). The idea behind this concept, which will debut at the Geneva Motor Show, is to show how the Volt's extended-range ...