What’s loonier than ludicrous? That’s what we’re waiting to find out as Elon Musk has hinted that an update to the Tesla Model S’s Ludicrous Mode will turn the EV into an even faster flagship.

Autocar points to a recent tweet from the billionaire inventor that sparks speculation about the Model S’s new acceleration potential:

“There will be a P100D Ludicrous Easter egg [sic] soon that uncorks the full performance.”

The hint is light on details, but considering the latest Ludicrous Mode update on the Model S P100D allowed the car to accelerate to 60 mph in 2.5 seconds, we can only imagine what’s on the way. Currently, the Model S P100D sits as the third fastest (accelerating) production car on earth. The Model S falls just behind two hypercars: Ferrari’s LaFerrari, and Porsche’s 918 Spyder. Perhaps Tesla is going for the record this time.

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Besides the untold performance boost, the Model S gets a couple new options, including a panoramic glass sunroof that’s at a “five star-plus” safety rating for rollover. Musk said the new roof was, “very hard to develop, but it makes the interior feel amazing.”

Speaking of glass, Tesla also announced it’s getting into the glass development game, sharing technology between Solar City’s new roof panels and the next generation of Tesla vehicles. The first fruits of this new venture will be experienced in Tesla’s upcoming Model S compact EV, due mid-2017 (though delays are expected).

As its stands, the Model S lineup is bigger than ever, with 60, 60D, 75, 75D, 90D, and P100D tiers of charge and performance, but a large price gap exists between the 90D and P100D. If history can be counted on, Tesla will likely introduce a model between the 90D and P100D shortly.