In California, a Tesla Semi fire required 50,000 gallons of water to be put out.

• An investigation by the National Transportation Safety Board is underway to determine the cause of a Tesla Semi crash and fire that shut down Interstate 80 in California for 15 hours last month.
• The NTSB stated in a preliminary report that it required CAL-Fire 50,000 gallons of water to put out the fire.
• In November 2017, Tesla CEO Elon Musk revealed the fully electric Semi trucks, but the company is still in the pilot production stage.

According to a preliminary report from the National Transportation Safety Board, a single-vehicle collision last month involving a Semi electric truck required 50,000 gallons of water to extinguish and necessitated aircraft to dump fire retardant overhead.

The NTSB is investigating the crash on California's Interstate 80 west of Lake Tahoe. CAL-Fire's efforts put out the flames and cooled the vehicle's massive battery to prevent it from reigniting and spreading the fire beyond the crash site.

An employee drove a Tesla truck from a warehouse in Livermore, California, to the company's battery factory in Sparks, Nevada, and the incident resulted in the closure of part of I-80 for 15 hours, according to a report.

In November 2017, Tesla CEO Elon Musk unveiled the design of the Semi truck at an event, stating that it would be available in the market by 2020. Although the company has not yet begun mass production of the trucks, it is currently setting up production lines at its facility in Nevada.

Tesla's semi factory is still being prepared and is expected to start production by the end of 2025, according to the company's second-quarter earnings report in July.

The NTSB report confirmed that Tesla's driver assistance systems, which are advertised as Autopilot and Full Self-Driving (Supervised) in the U.S., were not functioning during the Semi collision and fire.

Tesla didn't respond to a request for comment.

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