Amazon buys self-driving company Zoox. The Everything Store is paying about $1.2 billion to acquire the startup, according to a report in The Wall Street Journal. Reports of a possible deal had first surfaced a month ago, also in The Journal. Amazon is thought to be interested in self-driving technologies as a way to one day automate its delivery fleet, but for now ,Zoox says Amazon will help roll out the self-driving taxi service it's been developing. Amazon has previously made minority investments in self-driving truck company Rivian Automotive and self-driving company Aurora Innovation, which also is now working on a self-driving truck. Tesla's Elon Musk used the Zoox acquisition as an opportunity to try to troll Jeff Bezos, accusing him on Twitter of being a "copy cat." It is the latest example of Musk's displeasure with Amazon, which he has called a "monopoly" that should be broken up.