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Old 01-02-2013, 09:29 PM   #318 (permalink)
Master EcoModder
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Join Date: May 2008
Location: Maynard, MA Eaarth
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Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
90 day: 155.81 mpg (US)
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It's where the carbon comes from that matters to the long term level in the atmosphere. Fossil fuels (oil, coal, natural gas) all add "old" carbon into the air, raising the long term level of carbon dioxide; while burning wood or other biofuels like methane from sewage or farm waste digesters does not.
Sincerely, Neil