After Elon Musk, CEO of Tesla Inc. (NASDAQ: TSLA), had posted a tweet asking what the company can improve upon, a user responded asking for an electric pickup truck. Musk had told the user that he “promises” to make one right after the Model Y, which isn’t expected to launch until 2020.

“I promise that we will make a pickup truck right after Model Y. Have had the core design/engineering elements in my mind for almost 5 years. Am dying to build it,” wrote Musk.

Afterwards, another user had replied asking whether the pickup will be a F150 class or larger, and Musk replied, “Similar total size. Maybe slightly bigger to account for a really gamechanging (I think) feature I’d like to add.”

Generally, Tesla usually holds a showcase for its models prior to production launch, just like the most recent ones for the Tesla Roadster and electric semi. Most likely, investors can expect a showcase in a few years or when the Model Y is finished, with production beginning a year or two afterwards.

Tesla has faced serious drawbacks with its Model 3 production, which delayed many pre-orders being delivered. Yet, Tesla was still able to announce its Roadster and the semi truck which raised concern to its customers. Now, Musk is poking around the fact that it’ll begin production for a vehicle after another vehicle that hasn’t been deployed.

The major thing Tesla must focus on before it is able to announce or even begin production for new models is to have current operations running consistently. Nonetheless, investors can definitely expect Musk to deliver his promise, but a set time frame will most likely not be available.