So that’s it! Elon Musk, as is his wont, teased us with tweets of a new product announcement. Some speculated that it would be Autopilot 2.0, some the new solar roof that he has hinted it.

Nope. It’s a bigger and better battery. The new 100 kWh battery option increases range to an estimated 315 miles (on the EPA cycle) for Model S and 289 miles for Model X. It also makes a quick car even quicker. “The Model S P100D with Ludicrous mode is the third fastest accelerating production car ever produced, with a 0-60 mph time of 2.5 seconds,” says Tesla. The LaFerrari and Porsche 918 Spyder may be a little faster, but they are million-dollar two-seaters that are no longer in production.

Buyers who have ordered a P90D Ludicrous can upgrade to the 100 kWh pack for $10,000. Existing P90D Ludicrous owners can upgrade for $20,000.

Tesla is also trying out a new wrinkle in marketing, presenting the purchase of the new $134,500 super-sedan as an act of philanthropy: “We want to emphasize that every sale helps pay for the smaller and much more affordable Tesla Model 3 that is in development.”

Source: Tesla