the car, helping to limit the weight to 1,300 kg for the standard Aero. The SSC Ultimate Aero was the final version of the prototype, introduced in 2006. It had an increased engine displacement of 6,300 cc and increased boost to 100 kPa. Specifications: Engine: supercharged 6,300 cc Chevrolet Corvette C5R V8 Power: 780 kW (1045 hp) @ 6950 rpm Torque: 1,100 N⋅m (811 lb-ft) @ 6200 rpm Redline: 7200 rpm Top speed: 400 km/h (248 mph) Dry weight: 1,200 kg 2007–2008 The Ultimate Aero TT was a twin-turbocharged version of the Ultimate Aero. The 6-speed transmission was readjusted to increase the theoretical top speed to 440 km/h (273 mph) at 7200 rpm. Wheels on the base model are sized 460 mm at the front and 480 mm at the rear, while the Ultimate Aero TT has wheels an inch larger at each end. The 2007 models are heavier, with the base model weighing 1,300 kg, and Ultimate version 1,250 kg. Unlike the previous year, base models have a navigation system, 10-speaker audio/CD/DVD system, video/DVD screen, back-up camera, air-conditioning, and trunk space as standard equipment. These come optional on the Ultimate. The first production 2007 Ultimate Aero TT car was sold on eBay for US$431,100. Later cars are expected to cost US$285,000. Only 24 Ultimate Aero TTs were produced from 2006 to 2007. The Ultimate Aero TT made its international debut on the International Show Circuit in November 2006. The Ultimate Aero TT claimed the Guinness World Records for the fastest production car, after it was officially timed at 410 km/h (254 mph) in Washington. For 2008, the Ultimate Aero received four updates: New twin-turbocharged V8 New aluminium engine block Standard HRE monoblock wheels Azentek Atlas computer infotainment system Specifications: Engine - twin-turbocharged 6,300 cc bored-out LS6 Power - 880 kW (1180 hp) @ 6950 rpm Torque - 1,500 Nm (1106 ft-lb) @ 6150 rpm Redline - 7200 rpm Top speed - 410 km/h (254 mph) Dry weight - 1,250 kg SSC Ultimate Aero TT In 2009, SSC updated the Ultimate Aero TT, with the new version having an increase in power of 15% over the older model. SSC predicts a top speed of over 430 km/h (267 mph) is possible. In order to prevent the engine from overheating, airflow to the engine has been increased 20% with new carbon fibre louvres. The nose has been redesigned to make the