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Emission comparison: flying vs driving question

Discussion in 'Gen 2 Prius Fuel Economy' started by ciparis, May 25, 2006.

  1. ciparis

    ciparis New Member

    Joined:
    May 14, 2006
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    Location:
    Mill Valley, CA
    I'm considering driving instead of flying, from S.F. to Dallas, and trying to see if there's a significant environmental difference.

    My rough calculations use the following data:
    (Airline CO2 calculator available here: http://www.climatecare.org/britishairways/index.cfm)

    .27 british tons of CO2 from S.F. to Dallas, or 274,332.66 grams each way, per passenger
    Distance shows to be 1716 miles if driven, or 2761 km, giving roughly 99 grams/km emissions per passenger (seems low!).

    For two people that's about 198 grams/km total.
    I think the Prius figures being published are 104 grams/km.

    Does that figure change appreciably with two people in the car? Is it accurate to begin with?
     
    #1 ciparis, May 25, 2006
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