Tesla CEO Elon Musk made two posts on X that appear to tease a new car or relaunch of a car for "10/7." Tesla stock had its largest one-day gain in a while.

Tesla posted a teaser video on X sparking speculation that the company could finally be about to launch the next-generation Roadster or a mass market model.

Tesla CEO Elon Musk made two posts on X that appear to tease a new car or relaunch of a car for "10/7." Tesla stock had its largest one-day gain in a while.