I had read that colder temperatures caused problems for biodiesel cars. Freezing causes the alternative fuel to 'gel' up. This guy learned that little lesson. Thankfully, he had some good old-fashioned non-alternative diesel to buy:
Billy Amon lugs several gallons of diesel fuel for his bio-diesel car back to his home. Amon had tried to take a bus, but was denied because of the fuel he carried. His car won't operate in freezing temperatures with out the diesel.