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The bugatti 16.4 is the most powerful, most expensive
and fastest street-legal production car in the world, with a proven top speed of over 400 km/h (407 km/h or 253 mph). The Veyron features a W16 engine—16 cylinders in 4 banks of 4 cylinders. the final production Veyron engine produces between 1020 and 1040 metric hp as producing "1001 horsepower" in both the US and European markets.