Joke doesn't understand anything technical whatsoever. For example, the Tesla car battery is a friggin' joke. The original design isn't even a Tesla one. That's why they originally went with the Lithium Ion 18650 battery used in most contemporary computers and many power tools. This was a battery cell a bit bigger than a AA battery. A Tesla has around 7000 in a vehicle, the exact number varies a bit with which model you are talking about.
The battery is a nightmare of poor engineering complexity as a result. For all intents, a Tesla has a road life of about 5 to 8 years because when the battery takes a shit and stops working right the car is worthless. Replacing the battery pack runs about $20,000 + dollars. Even recycling the battery is a non-starter as the cost would exceed the value of the recovered materials.
The whole design is sheer idiocy and nobody would buy one if it weren't for heavy government subsidies--which one should note are going to end in the near future for Tesla unless extended or new legislation is passed. When that happens, the Tesla will become cost uncompetitive big time.
So, you might want to seriously think about dumping your Tesla stock while it still has value.