Tesla is set to reveal its first all-electric semi-truck in October — here’s everything we know (TSLA)

Tesla semitruck

Tesla is planning to get into the trucking business.

The electric-car maker is slated to unveil its first electric semi-truck October 26, CEO Elon Musk said in a tweet Wednesday night.

And while Musk hasn't said much about the upcoming vehicle, some details have leaked about what we might see.

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Tesla has been working with truck makers on the design of the vehicle.

Tesla CEO Elon Musk said the company is working with major truck companies to design the company's first all-electric semi-truck.

"We are showing off a working prototype at the end of September, but we have shown it to people who buy heavy duty trucking, and they all love it. They just want to know how many can they buy and how soon," Musk said during Tesla's annual shareholder meeting, hosted at the Computer History Museum in Mountain View, California, in July.

"We are getting them closely involved in the design process," he said.

Tesla is including the companies in the design process because it helps ensure their needs are met, Musk said.

Tesla may announce some of its trucking partners at the event.

Given that Tesla has already said it has been working with trucking companies on the design, it's possible the automaker would share who some of these partners are.

Its partners could include large truck carriers as well as shippers, according to a recent note from Morgan Stanley analysts Ravi Shanker and Adam Jonas.

Some potential partners include the trucking companies Schneider National and XPO, as well as FedEx, according to Jonas.