Revealed at the Goodwood Festival of Speed, the PLUG-IN PORSCHE: VISION 357 SPEEDSTER will debut in the U.S. at the Rennsport Reunion. Porsche marked the 30th anniversary of the Goodwood Festival of Speed in style with the world premiere of the PLUG-IN PORSCHE: VISION 357 SPEEDSTER. The new concept car is the sister-model to the Porsche Vision 357 with which the sports car manufacturer launched its own anniversary-year celebrations. In design terms the concept is a homage to the 356. However, t...