DETROIT (CBS DETROIT) – General Motors is preparing for the era of electric vehicles with its new electric Hummer.

The automaker announced another 20 electric vehicles will hit the market by 2023.

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Work already started on converting the Detroit-Hamtramck plant to an all-electrical facility.

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The process is expected to take between 12 to 18 months.

When complete, electric vehicles will help employ 2,200 workers at the plant.

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