Interesting article on Brazil’s rapid reduction of oil dependence thanks to ethanol: New York Times

Great and thorough presentation on ethanol by Vinod Khosla (found on Infectious Greed):

A couple of things I’m curious about and haven’t been able to find the answers for:

  • How do ethanol and biodiesel stack up against each other (Khosla briefly touches on this saying that over time ethanol will be more land use efficient)?
  • Can existing gasoline cars be retrofitted to become flex fuel and work with Ethanol?