I don't know, if I were an investor in Uber and saw them place a $5B order on Mercedes S-Class cars, I would think that there's a good chance they're worth $100

I don't know, if I were an investor in Uber and saw them place a $5B order on Mercedes S-Class cars, I would think that there's a good chance they're worth $100B. Haha, I just checked. A recent valuation is $68B. (Dec '15)