How many people can fit into a Tesla Model S?

It depends on what Elon Musk has to say.

Like many four-door cars, the Model S, or what might be called the big brother to Tesla’s Model 3 sedan, can seat four people comfortably. There’s room for five folks, if you squeeze another person in the backseat.

But that might not be enough for Tesla CEO Musk who, apparently, thinks seven could be the magic number of seats for the Model S.

Model S at Nürburgring has 7 seats — Elon Musk (@elonmusk) September 12, 2019

“Model S at Nurburgring has 7 seats,” Musk tweeted late Wednesday. Nurburgring is a motorsports racing complex in Germany.

Tesla had nothing more to add about Musk’s comment about a seven-seat Model S. Automakers are always working on concept cars designed to test new features, and it’s possible that a Model S with seven seats could either soon be on the road — or it might never end up as an option.

One thing that is in the works is a new powertrain that will allow those vehicles to reach faster speed, and more quickly, than the company’s current car models. Musk said it could be offered with some Tesla cars as soon as a year from now.

Tesla said a prototype Model S with what the company calls its Plaid powertrain completed the 2.2-mile course at the Laguna Seca racetrack in Salinas in 1:36.555 — which Tesla claimed set a new course record for a four-door sedan.

*~ Some personal news ~* We lapped Laguna Seca @WeatherTechRcwy in 1:36.555 during advanced R&D testing of our Model S Plaid powertrain and chassis prototype (That’s a second faster than the record for a four-door sedan) pic.twitter.com/OriccK4KCZ — Tesla (@Tesla) September 12, 2019

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Tesla driver ‘completely reclined’ and apparently asleep at 90 mph, police say Musk said in a separate tweet that the Plaid powertrain “is about a year away from production” and would be available for the Model S, Model X and Roadster vehicles — but not the Tesla Model 3 or the upcoming Model Y.

The company showed it has a sense of humor about its plans. The term “Plaid” is a reference to the movie “Spaceballs,” in which a spaceship is so fast is goes from “ludicrous” speed to “plaid.”