Yes, Elon Musk is serious about mass producing the 'Tesla Bot' and will present a prototype in 2022.

Here's how the robot is described on Tesla's site: "Develop the next generation of automation, including a general purpose, bi-pedal, humanoid robot capable of performing tasks that are unsafe, repetitive or boring. We’re seeking mechanical, electrical, controls and software engineers to help us leverage our AI expertise beyond our vehicle fleet."