Technology: L.A.'s High-Watt Highway

Electric cars get a boost in the capital of smog

Battery-powered autos are clean, quiet and remarkably energy efficient -- but they have a huge problem. Once they get on the road, even the most advanced models can travel only 190 km (120 miles) or so before they run out of wattage, and then they need to be plugged into an outlet for about six hours to get fully recharged. Now the city of Los Angeles and a California power company have proposed a radical solution to the problem of powering electric cars: electrify the roads. Last week they announced a $2 million demonstration project in which electric cables will be...

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