> Tesla's stock price might be detached from reality, but is their actual business in trouble?

I am not sure you can detach these two concepts. Tesla is currently valued around 3x the next top 5 auto companies combined, so to an extent you need to judge the company on these expectations. I happen to think they do have a pretty good business selling cars, and maybe a very good business selling autonomous cars, but there's so much uncertainty I think it is hard to see the current market cap as anything other than hugely inflated.