Wood + Charcoal-Powered Car

Seen at Automechanika Frankfurt 2006, was this biomass “blast from the past”. A 3.5l V6 1938 Opel Kapitän which ran on wood and charcoal almost seventy years ago.

According to greencarcongress.com, "Charcoal burning conversion kits, which are really wood gas generators, enjoyed a brief civilian and military niche market in England, Germany, Australia, the United States, and other countries up to and during World War II. Wood gas generators were used to power taxis in Korea as late as 1970."

Fuel economy: 100 km / 38 kg of charcoal. The exhibitors, Alternative Kraftstoffe und Hybridantreibe didn't mention the CO2 emissions data.