"You got that part wrong. Google is out to get Uber, and Uber threw Levandowski at them to try and distract them."
Agree. It seems the most likely scenario is that Uber knew full well where this IP was coming from... which is why they paid $680m for a few month old company. It is possible that they even put him up to stealing Google IP as he seems to have met with Uber while a Google employee, prior to starting his own company. A few months later, Uber acquires the small start up for north of half a billion. In the words of Brad Pitt from IB, "we have a word for that kind of odd in English, we call it suspicious".