sentences:  The Porsche 918 Spyder supercar was developed in Weissach; Porsche offered an optional "Weissach package" that featured reduced weight and improved aerodynamics.Erich Hartmann (born April 19, 1922, in Weissach, died September 20, 1993 in Weil im Schönbuch) was a Luftwaffe pilot in World War 2.With 352 confirmed kills, he was the most successful fighter pilot in the history of air combat.