Even Greenpeace is on board the bio-deisel bandwagon now.
http://news.bbc.co.uk/hi/english/uk/scotland/newsid_1202000/1202935.stm
Don't get to hung up on the infrastructure issue. It is changed over to newer and better technology every 7-10 years or so anyway.
One of the biggest drivers of those change-overs is government regulations regarding things like fuel-leaks, MTBE getting into drinking water, etc...
