Tesla unveiled plans to design and build revolutionary new battery technology for 2022.

They claim gains of 5 times the energy, 18% gains in range and 6 times the power. Not to mention gains in manufacturing efficiency and lower cost production.
They plan to license this technology to other automakers in the future. The way that nintendo licensed old cartridge technology over existing technology like CDs/DVDs to earn an extra profit.
Anyways, if someone wanted to claim tesla stock is overvalued, this might be one good place to start.