Zume Pizza is a Silicon Valley punchline that also could be worth $4 billion

You wouldn't be the first person to roll your eyes if told that a Silicon Valley startup that uses robots to make pizza is worth almost $2 billion. Nor would you be the first person to question aloud how that same startup, a year later, could soon double in valuation. But indeed, Recode has learned that this startup, Zume Inc., is in talks with investors to be valued at about $4 billion in a new round of fundraising, according to people familiar with the matter. One part of the story that isn't so surprising: One of Zume's biggest investors is SoftBank, the controversial investor behind WeWork and Uber that has become emblematic of Silicon Valley's excesses. SoftBank pumped $375 million into Zume just last year.