TheĀ Bugatti Veyron Super SportĀ 16.4 is officially the fastest supercar in the world. The Veyron broke the record by hitting 431 km/h (267 mph), which is a record for a production car. With representatives of theĀ Guinness book of recordsĀ andĀ German Technical Inspection Agency (TĆV).Ā The Veyron is officially in the Guinness book of records.