Curious how you think Google being predator by providing an app that allows commuters to share rides.
Google's interest is self driving cars. They've poured a ton of cash into it and aren't keen to see Uber beat them to the punch. They are putting a monkey wrench into Uber's business model. They won't make any money from this, but they will hurt Uber's profits. That's what happens when the core of your business is an app that a few good engineers could put together in a month.