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Elon Musk unveils an electric semi-truck

Screenshot from Tesla live feed

In a typically showy ceremony in Southern California last night, Tesla CEO Elon Musk unveiled a sleek prototype electric semi-truck that he said will travel 500 miles on a charge, go zero to 60 mph in 20 seconds fully loaded, and charge most of the way in 30 minutes while a driver rests and eats. He appeared to say that the vehicle will be able to operate semi-autonomously in convoy, which would be the first step to self-driving trucks.

Why it matters: Musk did not say how much the truck will cost, but that it will be cheaper to operate than a standard diesel. If he is able to deliver the semi-truck as described, it seems likely to shake up the freight market just as he has the car business. Experts expect semi-truck traffic to surge in the coming decades as the global population grows to 9 billion people.