Elon Musk took to Twitter late on Wednesday night to tout Tesla's forthcoming "advanced summon" feature, which he says is due out in about six weeks.

"Car will drive to your phone location & follow you like a pet if you hold down summon button on Tesla app," Musk tweeted.

In another tweet, Musk said that "you’ll be able to drive it from your phone remotely like a big RC car"—though only if the car is within the line of sight.

Tesla vehicles currently have a basic summon capability, which allows the driver to tell the car to inch forward or backwards from outside the vehicle using a smartphone. This is useful for squeezing into tight parking spaces.

But Tesla has long touted a more ambitious vision—one where you just get out of your car and the vehicle will find a parking spot, park itself, and then come and pick the driver up later. Tesla has been promoting these features on its Autpilot page for more than two years, even though they weren't available.

But now Tesla seems to finally be taking a step toward the vision the company first laid out in 2016. Still, Musk's tweet doesn't offer much detail about exactly how the feature will work or what its limitations will be.