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I don't know which document you're looking for, but it is inherently difficult to make a chart of relative carbon footprint when you have all of the following variances:1. Electricity Generation has a varying carbon footprint depending on local sources. This dramatically affects BEVs.2. ICE vehicles have varying efficiency depending on vehicle size, performance profile and engine technologies applied.3. Fuel Cell Vehicles have varying efficiency and the carbon footprint of hydrogen synthesis varies by process.UCS comparison of Hyundai Tucson with various propulsion systems (not including BEV):http://blog.ucsusa.org/how-clean-are-hydrogen-fuel-cell-electric-vehicles-696DOE comparison of various propulsion systems (not including FCEV):http://www.afdc.energy.gov/vehicles/electric_emissions.phpI might be interesting to follow the UCS methodology and calculate the g/mi GHG emissions of a RAV4 EV for comparison to the Tucson. I don't have time to do that right now.
I don't know which document you're looking for, but it is inherently difficult to make a chart of relative carbon footprint when you have all of the following variances:
1. Electricity Generation has a varying carbon footprint depending on local sources. This dramatically affects BEVs.
2. ICE vehicles have varying efficiency depending on vehicle size, performance profile and engine technologies applied.
3. Fuel Cell Vehicles have varying efficiency and the carbon footprint of hydrogen synthesis varies by process.
UCS comparison of Hyundai Tucson with various propulsion systems (not including BEV):
http://blog.ucsusa.org/how-clean-are-hydrogen-fuel-cell-electric-vehicles-696
DOE comparison of various propulsion systems (not including FCEV):
http://www.afdc.energy.gov/vehicles/electric_emissions.php
I might be interesting to follow the UCS methodology and calculate the g/mi GHG emissions of a RAV4 EV for comparison to the Tucson. I don't have time to do that right now.
