As Bugatti finalizes development of the Chiron Super Sport 300+ before commencing customer deliveries, Mat Watson from CarWow recently had the opportunity to ride shotgun in a prototype during a round of recent high-speed tests at Nardo.

It has been 12 months since Bugatti shocked the world when it revealed the Chiron Super Sport 300+ reached a one-way top speed of 304.773 mph (490.484 km/h) at its Ehra-Lessien testing facility. While the car didn’t hit the two-way top speed average required by Guinness to be officially considered the world’s fastest production car, there’s no denying this car is the now benchmark and the target of fierce competition from the likes of Hennessey, SSC, and Koenigsegg.

Read More: Bugatti Chiron Super Sport 300+ Capped At Just 30 Units Worldwide (New Images)

Like the ‘regular’ Chiron, the Super Sport 300+ is powered by a quad-turbo 8.0-liter W16 engine but pumps out 1,578 hp as opposed to 1,479 hp. The other key reason why the Super Sport is so much faster is due to aerodynamics. It is 9.84 inches (25 cm) longer than the standard Chiron thanks to an extended tail section that helps it cut through the air. Bugatti has also removed the rear wing and airbrake.

The prototype featured in this clip is painted matte black and was capped at 300 km/h (186 mph) on this particular day of testing. A top speed of 300 km/h is impressive by any measure but almost starts to feel insignificant when you remember the Chiron has almost 200 km/h of additional speed up its sleeve.