of handling a connection to the system and then the software needed interface, and this task is affected by the model year and equipment options of any particular S-Class. One of the major advancements in this period was Bluetooth, and many modern updates are oriented towards this wireless data connection technology. One option is the use a "puck" which plugs into the existing hardware, and engages the COMAND computer/software like an original device, but can talk to a modern device on the "other side" typically via Bluetooth. The advantage of using a puck in this style is it means the existing cradle and/or cabling has to be changed but still allows connecting with a variety of different devices, especially a wide-variety of "smart-phones" that became popular in the decade after the W220. Engines The W220 was available with more engine options than the W126 or W140. The range started with a smaller 2.8L V6 motor. Very popular was the 3.2L V6, which was superseded by an enlarged 3.7L V6 in the S 350. Despite their popularity, the 6-cylinder S-Class cars were not imported into countries such as the United States until model year 2006 with the S 350 (short wheelbase), where Daimler was then testing the market demand for a V6 S-Class. The S 430, the only United States market S-Class available with both a short wheelbase ('03-'06) as well as a long wheelbase, was that region's most popular model and powered by a 4.3L V8 that avoided the federal government's Gas Guzzler Tax of $1000. The S 500 was powered by a 5.0L V8. The S 55 AMG ('01-'02) was outfitted with a 5.4L V8 motor while the later versions ('03-'06) sported the same motor, but supercharged to a rated . The S 600 ('01-'02) was outfitted with a 5.8L V12 engine while the later versions ('03-'06) sported a twin-turbocharged (or Bi-Turbo) 5.5L V12. Both S 55 AMG and S 600 have same engine output but target different clientele: the former more sporty and responsive while the latter more luxurious with a smoother ride. For one month in 2001, AMG produced the S 63 AMG, which was sold in very limited numbers. The S 63 was powered by a naturally aspirated 6.3L V12. It was only offered with a long wheelbase and with rear-wheel drive. A total of 70 cars were sold exclusively through AMG in European and Asian