Companies race to make electric cars mainstream. PBS NewsHour video

When Tesla Motors announced in March it would build a new, all-electric car at a starting price of $35,000, it was a turning point for the company. General Motors is also developing an all-electric sedan and hopes to market it early next year. Will increased competition and new options spur more sales? NewsHour Weekend Special Correspondent John Larson reports. PBS NewsHour Video

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