Electric-car technology is accelerating faster than some of the vehicles do… The Guardian deciphers for us the latest developments, including benefits for plug-in owners like free parking and toll-free driving in the city. Another example: if you’re in London, you can hail a cab from Green Tomato Cars, the cabbies with a conscience:

This minicab company’s fleet is comprised of electric hybrids: “Our fares are the same as other companies’, but our vehicles emit less than half the carbon dioxide of a traditional black cab.” (Their great Web site has energy savings tips!)

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