Fuel cell expert questions Tesla plans

Hybrid VehiclesElon MuskTesla Motors, Inc.Fuel-efficient Vehicles
Tesla Motors Chief Executive Elon Musk has announced plans to accelerate a nationwide network of fast-charging stations for his company's electric cars, but some say he may be promising more than he can deliver. Above, Tesla workers cheer the sale of the first Tesla Model S sedan. Paul Sakuma / Associated Press
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