Elon Musk, the world's greatest one-man PR machine, has hinted at the existence of another Tesla: the Model Y.

Musk revealed the information in a tweet last week, which he quickly deleted. Musk had taken to Twitter following the début of the Model X—Tesla's SUV with falcon-wing rear doors. A fan tweeted at Musk, saying she would love for the Model 3 to have falcon-wing doors as well. Somewhat surprisingly, Musk responded with: "There will be a Model 3 and a Model Y. One of the two will."

At this point, we're fairly certain the Model 3 won't have falcon-wing doors; all signs point to it being a smaller, cheaper version of the Model S. It would follow, then, that the Model Y might be a smaller, cheaper version of the Model X. Tesla trademarked the name "Model Y" back in 2013, around the same time that it trademarked the Model E.

If the Model Y is real, that would mean that there will eventually be a Model S, 3, X, and Y. The Model 3 was originally going to be called the Model E, but Ford sued over the name. Tesla, showing admirable tenacity, is expected to style the Model 3's logo as three horizontal bars (≡), making the company's puerile pun a little more obvious (S≡XY). Let us not forget that this is also the same company that has a Ludicrous Mode, a Bioweapon Defence Mode in the new Model X, and an audio system that goes up to 11.

In the same Twitter session last week, Musk also said that "probably around 12 months from now" there would be a cheaper version of the Model X with a 70kWh battery. That tweet was also deleted.