Biodiesel Jetta uses far fewer fossil fuels than a Prius, says university biodiesel group
Anyway, UNH found that the Prius costs less per mile to operate, but the biodiesel Jetta wins - by a lot - the fossil energy input/mile (OK, the Dodge ESX3 concept beats the biodiesel Jetta, but where you gonna find one?). A footnote explains that energy input per mile was "calculated based on 50/50 average fuel mileage and energy balance of creating fuel, using 3.2:1 for biodiesel (when made from soy), 0.83:1 for petroleum diesel, 0.74:1 for gasoline, and 0.5:1 for hydrogen (based on electrolysis of water)" so that it "equals (energy density of fuel )/[(fuel efficiency (mpg))*Energy balance]."
So, all you biodiesel fans and hybrid lovers, what does this chart say to you?
[Source: University of New Hampshire]
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