A big part of why the fuel economy of the vehicles is close is how the energy is calculated.
Darin is converting both gasoline and electricity to BTUs to be able to directly compare the two, and he is extremely frugal with how he uses the gasoline.
If you compare the two on cost, electric can be a LOT cheaper, depending on where you live and your electric power source.
Also, electricity can be made from oil, coal, nuclear, solar, hydro, wind; you name it. Gasoline can only be made from petroleum.
So even if the two cars got identical MPG, electric still has some advantages.
(Plus it's so darn quiet!)
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