The Porsche 901, designed by the grandson of the German automaker's founder, debuted at the 1963 Frankfurt Auto Show, featuring a distinctive silhouette and rear-placed opposed 6-cylinder engine that's remained intact to this day. Renamed the 911 early on, the automobile is the flagship model in the Porsche lineup, enjoying 50 years of continuous production since its original launch. In honor of the achievement, Porsche will introduce a Porsche 911 50th Anniversary Edition, based on the 2014 Porsche 911 Carrera S and produced in a quantity of just 1,963 units. Featuring the wider stance of the Carrera 4, the car's 3.8-liter flat-six engine is good for 400 horsepower and is mated to either a seven-speed manual transmission or Porsche's PDK dual-clutch gearbox. Unique details include 20-inch wheels done up in Porsche's legendary "Fuchs" pattern, "911 50" rear badge and leather seats featuring 1960s "Pepita" tartan cloth. The 50th Anniversary 911 arrives in dealerships this fall, fetching a $125,000 price tag.