You take what you can get. So I've been happily anticipating my 40-mile-electric-range hybrid in spite of the nagging feeling it wasn't the best way to move forward quickly.
Now the Carnegie-Melon Institute has reported that 7 miles is the optimal battery range for urban drivers:
"We looked at a wide range of scenarios from fluctuating gasoline prices to new battery technology and carbon taxes. The core conclusion is consistent: For urban drivers who charge frequently - every 20 miles or less - plug-in vehicles with small battery packs sized for about 7 miles of electric travel per charge can reduce gasoline consumption, greenhouse gas emissions and lifetime cost. For those who can't charge often, large-capacity plug-in vehicles sized for 40 or more miles of electric travel will still reduce gasoline consumption and greenhouse gas emissions, but at a higher lifetime cost,''It's nice to be vindicated, but I'm afraid the 40-mile standard automakers have bid each other up to is entrenched. And unfortunately, some recent news stories are predicting doom for the plug-in hybrid effort. While Toyota is still talking brave, I hope they take this Carnegie-Melon study very seriously.
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