Tesla CEO Elon Musk posted a mysterious series of tweets last Friday, including one referencing a Tesla Model Y.

Just as puzzling, he later deleted them.

Tesla Model Y

In the Twitter conversation, a Tesla fan asked if the Model 3 crossover will have falcon wing doors, similar to the configuration on the Model X.

“There will be a Model 3 and a Model Y. One of the two will,” replied Musk.

To date, there has been no official word from Tesla about a Model Y, leaving us to wonder if the tweet was a typo or if Musk inadvertently leaked the name of Tesla’s next vehicle in development. By piecing together other known facts, it appears likely that the Model Y will be the name of a Model 3-based crossover.

SEE ALSO: What We Know About The Tesla Model X

Tesla made mention of this potential crossover during a conference last July. While covering the event, The Wall Street Journal reported Tesla Chief Technical Officer JB Straubel as saying, “the third-generation vehicles currently under development will be available as both sedans and crossovers.”

Tesla has also trademarked the Model Y name. For those who haven’t already put it together, the crossover’s release will create this Tesla fleet: S, 3, X, Y.

Elon Musk

A hint about the Model Y wasn’t the only odd comment from the same burst of tweets. Musk also wrote – and then later deleted – a post about a 70D version of the Model X that will be released next year. And in a separate conversation, Musk noted that the Model X rear doors have a “hydrophobic coating” and “act as an umbrella” when it’s raining.