We might think that our ethanol and biodiesel “flex-fuel” systems are all very cutting edge, but biofuel development is of course nothing new. Way back in the 1930's, Henry Ford was hard at work in the alt-fuels sector, and in 1941 he constructed a hemp-fueled and hemp-bodied prototype car. The 'plastic' body panels were composed of 70% cellulose fibers, including industrial hemp, mixed with a resin binder, and apparently they were pretty sturdy.
The reason marijuana was prohibited in the 20th century was to suppress hemp fuel and fiber production, which is inexpensive to make and naturally decentralized, so that small groups of