Certain systems, such as the automatic transmission and some engines, are also shared with the Audi A8. Compared to the Audi A8L 4.2 litre FSI quattro, the Phaeton is heavier but is still competitive with the lighter A8 in most driving tests, due to the Phaeton's increased engine power (335 hp versus 330) and a shorter axle ratio (3.65:1 versus 3.32). However, the weight gives the Phaeton considerably worse acceleration and poorer fuel economy compared to the A8. The Phaeton had the longest wheelbase in the Volkswagen passenger car line. Development of the vehicle led to over one hundred individual patents specific to the Phaeton. Distinctive features include a draftless four zone climate system, and standard Torsen based 4motion four-wheel drive. For high ride comfort, it introduced Adaptive Air Suspension with Continuous Damping Control (CDC)-(Skyhook suspension). The same suspension system, with firmer settings, was introduced in the technically similar Audi A8 in November 2002. First Volkswagen with radar adaptive cruise control: automatic distance regulator (ADR). The Phaeton Lounge was a concept car based on a lengthened version of the Phaeton with seating for four (two pairs of seats facing each other) in the rear compartment. It features a W12 engine, a reinforced chassis, six speed Tiptronic automatic transmission, individual climate control for each passenger, front and rear wine coolers, a minibar, multi color mood lighting, a cigar humidor, two 17 inch monitors, DVD changer in the trunk, second DVD player in the rear cabin, and a Bluetooth enabled computer with a broadband connection. The vehicle was unveiled in 2005 Middle East International Motor Show. The Phaeton was hand assembled in an eco friendly factory with a glass exterior, the Transparent Factory () in Dresden, Germany. This factory had a capacity of producing 20,000 vehicles a year, and was planned to expand to 35,000 vehicles a year. It also assembled Bentley Continental Flying Spur vehicles destined for the European market until October 2006, when all assembly of the Bentley products was transferred to Crewe, England. The Phaeton body was fabricated and painted at the Volkswagen works at Zwickau, Germany, and the completed bodies were transported approximately 100 km by special road transport vehicles to the main factory. Most Phaeton engines, the W12 being the notable exception, were built at the VW/Porsche/Audi engine plant in Győr, Hungary.