Koenigsegg CCX / CCXR

The CCX (Competition Coupé Ten, marking ten years of the company) launched 2006 as Koenigsegg's first US-emissions-legal car — the previous CC8S and CCR weren't federalised. Koenigsegg-developed 4.7-litre twin-supercharged V8, 806 hp standard. The CCXR (2007) was Koenigsegg's E85 flex-fuel variant, making 806 hp on regular gasoline or 1,018 hp on E85 biofuel. The CCXR Trevita (2008) used Koenigsegg's diamond-coated carbon fibre body — only 2 cars built (originally planned at 3). Production across CCX, CCXR, and Trevita totalled around 49 cars (29 CCX, 18 CCXR, 2 Trevita). Original prices: CCX $545,568, CCXR $711,475, Trevita $4.85 million. The CCX achieved a 0-300-0 km/h run in 29.2 seconds in 2008 — at the time a record. Replaced by the Agera in 2010-2011. The CCX/CCXR is the first 'modern' Koenigsegg with US legal status, and Trevita examples are among the most valuable Koenigseggs ever sold.