Just to put that into context: Tesla is now worth more than Toyota, Volkswagen, Hyundai, GM and Ford put together.
'You're being too rational!'
I've done some back-of-the-envelope calculations and those businesses, some of which are undoubtedly ailing, made a combined profit of more than $50bn last year.
This year, Tesla is on course to make something like $1bn. So to believe the current valuation, surely you have to have some confidence that its technology and its market dominance will deliver a 50-fold increase in profits over the not too distant future?
Tech Tent: Is Tesla really worth $500 billion?
https://www.bbc.com/news/technology-55103706