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Matt,
How can the RAV4 EV that gets ~111MPGe have a larger carbon footprint than the 25MPG ICE RAV4? That is less than 25% of the energy consumed, and the carbon from that is no more than 1/3 as much as the gasoline alone; and does not count the embedded energy to produce the gasoline. The source-to-wheels of the EV is about 1/3 of the tank-to-wheels of the gasoline.
The Leaf battery pack will probably cost ~$9,000, and maybe less in 10-12 years when you replace it. The RAV4 EV battery packs have lasted more than 150K miles -- and they are NiMH.
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