Hey i just bought an LPG car as i was doing 140 round trip to work 6 on and 6 off. = 30k miles a year and around £7k per year in fuel (was driving 2.5 V6 Omega Elite which done 30 mpg tops) now I am around £2k per year and have no loss in either performance, etc. So whatever you do or find out re: biofuel I am all in favour of alternative fuels mostly due to the selfish reason of saving dosh.