car more aerodynamic, and the interior has been redesigned. The new Aero also has a new AeroBrake system, which is a spoiler which rises up to 200 mm when the brake is pressed. This updated model reached a top speed of 415 km/h (258 mph) in a test, according to SSC. Specifications: Engine: twin-turbocharged 6,300 cc SSC V8 Power: 960 kW (1287 hp) @ 6100 rpm Torque: @ 6100 rpm Redline: 7200 rpm Top speed: 415 km/h (257 mph) Dry weight: 1,250 kg A 2009 SSC Ultimate Aero, albeit with the new prototype SSC Tuatara gearbox fitted, was able to complete six runs of 0–300 km/h (186 mph) from 15.1 to 15.8 seconds, according to SSC's gear ratio testing results. SSC Ultimate Aero EV In 2009, SSC announced that they would be commencing production of the Ultimate Aero EV, an electrically powered version of the Ultimate Aero. This car featured twin electric motors, claimed to be capable of producing 750 kW (1005 hp) and 1,085 N⋅m (800 ft-lb) of torque through a three-speed automatic transmission. SSC claimed that the car would be able to accelerate from 0–100 km/h (62 mph) in 2.5 seconds, and reach a top speed of 335 km/h (208 mph). However, the car never entered production. 2013 In 2013, SSC introduced the Ultimate Aero XT, which was a special version of the Ultimate Aero that was built to celebrate the end of its production. Five XTs were planned, but only one was built. They utilised some components that were designed for its Tuatara replacement; for example, the Ultimate Aero XT was fitted with SSC's new 6.9-litre all-aluminium twin-turbocharged V8 engine and a seven-speed paddle-shifted gearbox. Specifications Engine: twin-turbocharged 6,900 cc SSC V8 Power: 970 kW (1300 hp) @ 6800 rpm Torque: 1,360 N⋅m (1000 ft-lb) @ 6800 rpm Redline: 9100 rpm Top speed (theoretical) - 268 mph (432 km/h, 120 m/s) Top speed (actual): 257 mph (414 km/h, 115 m/s) Drag coefficient: 0.357cd Dry weight: 1,270 kg Kerb weight: 1,300 kg Speed record Simulation and testing at NASA's Langley Research Centre had shown the Ultimate Aero TT theoretically capable of attaining approximately 440 km/h, sufficient to surpass the production car record-holding Bugatti Veyron's 408 km/h. A 20 km stretch of Route 93 was closed on March 21, 2007, to allow SSC to test the Ultimate Aero TT, but the attempt was called off due to bad weather,