Hello BESTers, Britain has unveiled its first dual-fuel bus that runs on biogas. I believe that biogas-powered vehicles will help break the barrier to anaerobic digestion development. If we can power our cars, buses, trains, and planes on biogas, gaseous bioenergy will get as much press attention as liquid biofuel(biodiesel and bioethanol). One way to do this would be to push for more natural-gas powered vehicles as a stepping stone to biogas. With all the option for vehicular biofuels, we should be able to run a good portion, if not all, of our vehicles on renewable energy. http://www.sciencedaily.com/releases/2009/09/090908203750.htm Have a great weekend, Ryan "Britain???s First Dual Fuel Bus Will Cut Emissions By Half" Science Daily Sep. 10, 2009