Geneva Preview: TechArt to Debut Panamera-Based Concept One, Plus 660-hp GT Street R
German Porsche tuner TechArt has two new projects in store for the Geneva Auto Show, one powerful and traditional, and one that takes the tuner in a whole new direction. First up is the Concept One, based on the Panamera Turbo. Looking quite like a concept, particularly on the inside, where unique materials and funky...