If the phrase "autonomous vehicle" makes you think of some four-wheeled pod tootling around the city, you need to think bigger. For all the talk of robo-taxis, the smart money says that when this tech comes for our roads, it'll start on the highway. And if you're looking for proof, grab your sunglasses, a trucker hat, and a ticket to Arizona or Florida--the testing grounds of choice for the companies teaching trucks to drive themselves. This week, we have news of Uber testing in the Copper State and startup Starsky Robotics sending a truck down a Florida highway, all by itself. Meanwhile, the titans of the auto industry met at the Geneva Motor Show, where the talk centered on supercars--and how to take down Elon Musk.