But the price of oil including greenhouse gas emissions and war makes plug-ins an increasingly attractive option, at least until the car companies get in gear.
"Had it not been for the grassroots effort," Sherwood said, "backyard conversions wouldn't be possible. Car companies wouldn't even be thinking about making plug-in hybrids." But they're thinking about it now.
Comments, ideas, and submissions for Green City, the Guardian's weekly environmental column, can be sent to email@example.com.
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