Inside Tesla's Fremont Electric-Car Plant: How Model S, Model X Are Built (Video)

While the lithium-ion battery "Gigafactory" under construction in Nevada continues to get most of the attention, Tesla's existing assembly plant in Fremont, California, continues to steadily churn out electric cars.

The company has built the Model S sedan in Fremont since 2012, and is now building the Model X crossover there as well.

And as it continues to build more cars, Tesla seems to be more relaxed about letting video crews into its factory.

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It recently showed off the Fremont factory's inner workings to a San Francisco Bay Area CBS television crew.

Even with restricted media access, the factory's white interior paint and epoxy floors--a personal preference of CEO Elon Musk, apparently--should be familiar to anyone that follows Tesla.

About the only things that aren't painted white are the red robots, some of which have comic-book names like "Cyclops."

It's likely a somewhat different look than the Fremont plant had under its original owners.

The 5.3 million square-foot building started out as New United Motor Manufacturing, Inc. (NUMMI), a collaboration between General Motors and Toyota.

At peak production, it was able to build 500,000 cars a year--mostly compacts like the Pontiac Vibe and Geo Prizim.

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