Another Swedish brand enters the list; this time, with an advocacy to help the world. One of the top ten most expensive cars in the world 2011 is Koenigsegg’s Bio Fuel Powered CCXR: the environmentally friendly car. This hot rod has its engine modified to accept biofuel, thus making it the eco-friendly super sports car of the world. While its features are unparalleled by most cars in the industry, the environmental breakthrough by Koenigsegg’s Team is a start towards the fight against environmental pollution.