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How do you respond to the critics that say that the expense of the batteries makes the car not worth the fuel savings? How long are they expected to last? How much performance do you lose over time? How much do they cost to replace?
If it's a once every 10 year thing and costs a few hundred bucks, I don't see the problem. If it's every 3-4 years and costs $5k, Houston, we have a problem!
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