The mind-boggling array of vehicles present ran on six different fuels and included four different diesel-derivative engines: a current-production Polo BlueMotion diesel; a next-gen Jetta “Clean TDI” coming to the U.S. in ’08 under the BlueTec banner; a New Beetle convertible running on SunFuel, a diesel fuel manufactured from biomass-plants, woodchips, and other forms of biological waste-and a Touran running VW’s Combined Combustion System (CCS), a mixture of gas and diesel that is said to burn more completely and is therefore cleaner than either fuel on its own. We also sampled two compressed natural gas (CNG) vehicles, a Touran and a Passat running VW’s new TSI turbo- and supercharged engine; a half-baked hybrid Touran; and a Touran powered by a hydrogen fuel cell.

Read all about the various technologies in more depth at Car&Driver

via::AutoBlogGreen