>Tesla have only been making an entire car for a few years, and they've only made a few tens of thousands of them. This is one thing that really worries me. Be

>Tesla have only been making an entire car for a few years, and they've only made a few tens of thousands of them. This is one thing that really worries me. Being connected to the auto industry the development of a new power train components is normally 6-10 years. The idea that you could roll out even something as simple a rear differential without 5 years of testing is pretty scary. I know computer modelling is pretty decent, but once you have models, you need to test your models. The automakers tried in the 90's to build completely without prototyping and it went over like a ton of bricks.