Saw a news program recently about a California family who grew an abundance of crops on their large city lot, for themselves and also to sell. They also collect old cooking oil for their diesel suburban to run. Very interesting.
http://www.dervaesinstitute.org/media/publication/Capital%20Press%20-%20Dec-20-2002.pdf Their old website and biofuel: http://pathtofreedom.com/pathproject/offthegrid/biodiesel.shtml
