Porsche Museum. A 928S from Raymond Boutinaud also competed at the 24 Hours of Le Mans in 1983 & 1984 with a 22nd-place finish in 1984. The same car also competed in 1000k races at Spa, Brands Hatch and Silverstone in 1984, but with little success. It has been rumored that the Raymond Boutinaud 928S was also an "all-aluminium" car from Porsche but that has been unfounded. Bonneville On August 7, 1986, American racing driver Al Holbert set a speed record at Bonneville in a pre-production 928 S4. This 928 would turn 171.110 mph in the flying mile and 171.926 mph for the flying kilometer. In March 1986, the same car reportedly did 180+ mph at Nardo, but the Bonneville run netted the United States Auto Club official record at the time for International Category A, Group 2, Class 9, for normally aspirated vehicles. That made 1987's 928 S4 the fastest non-turbocharged production car in the world. On September 15, 2011, at the Bonneville Salt Flats, American race car builder and driver Carl Fausett set a new Bonneville record of 216.63537 MPH, certified by the Utah Salt Flats Racing Association. USFRA. The car was a 900 BHP supercharged 6.5 Liter 928 specially built by Fausett and his team for the Bonneville attempt. The car was dubbed the “Rekordwagen” and raced in class Blown Gas Modified Sports B/BGMS. This was a new world record for the 928 model at that time, although Fausett would go one to eclipse this record again later (see Closed Course Speed Record below). Pikes Peak The Pikes Peak International Hill Climb is the second oldest auto race in the U.S.; a 12.42 mile (19.99 km) course with 156 turns starting at 9390 ft and ending at the 14110 foot summit of Pikes Peak. In 2007, 2008 and 2009 American racing driver Carl Fausett took his specially prepared and supercharged 1978 Porsche 928 to the Pikes Peak International Hill Climb and competed in the Open Division. Fausett placed third in the Open Division in both 2007 and again in 2009, where he was also the fastest 2WD car. At that time, much of the racecourse was gravel. Today the entire Pikes Peak Highway has been paved. Closed Course Speed Record A new closed course speed record was set for the Porsche 928 at the Transportation Research Center (TRC) Proving Grounds. TRC. in Ohio on October 5, 2020.