 For example, Guinness recognises a modified 2-seat Jaguar XK120 as the world's fastest production car in 1949.In 2010 the "Guinness Book of Records" awarded the record for the ‘Fastest production car’ to the Bugatti Veyron Super Sport.In 2013 their decision was appealed on the ground that the Bugatti was a modified version - the limiter was turned off, a fact already known in 2010.