It is probably no coincidence that his grandfather had developed a famous supercharged 16-cylinder engine for the Auto Union racing cars in the 1930s. Piëch was denied the chance to complete it, as a turbocharged version of the existing 12-cylinder was simpler, more powerful and very successful. Three decades later as CEO of Volkswagen Group, Piëch insisted on the very ambitious Bugatti Veyron, with a turbocharged W16-cylinder, 1,001 horsepower (746 kW) and 407 km/h (253 mph) top speed.