RENO, Nevada (CBS SF) — As Tesla prepares to bring the first electric semi-truck to market, the automaker is beginning to test the trucks for delivery runs.

On Wednesday afternoon, CEO Elon Musk posted a picture of two semis setting out on their first delivery run from the Gigafactory near Reno to the company’s plant in Fremont.

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“First production cargo trip of the Tesla Semi heavy duty truck, carrying battery packs from the Gigafactory in the Nevada mountains to the car factory in California,” Musk said.

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Musk unveiled the big-rig at an event last November, claiming the semi-truck would be capable of traveling 500 miles on an electric charge. The distance between the Gigafactory and the Fremont plant is about 260 miles.

Walmart and Anheuser-Busch are among several major companies who have already placed deposits for the truck, which is expected to cost between $150,000 and $200,000.

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The truck is expected to launch in 2019.