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The heavy-duty six battery pack Class 8 Volvo VNR Electric, with 565 kilowatt-hours of total capacity and a marketed range of 275 miles, on display at San Diego Gas & Electric’s EV Fleet Day on April 19. (Alejandro Tamayo/The San Diego Union-Tribune)State and federal regulators have rolled out tighter emission rules, pushing commercial operators toward zero-emission vehicles
Originally published at San Diego Union-Tribune