The company said Wednesday that every new Tesla rolling off the factory floor will now come with the hardware necessary to support full autonomous driving mode. This includes the recently announced Model 3, Tesla’s electric vehicle targeted at mainstream consumers. Some of the company’s existing Model S and Model X vehicles already have the technology, according to the company.To make the system work, Tesla is equipping every new car with eight cameras to pull in visual data from around the car in 360 degrees. An additional dozen ultrasonic sensors will help detect obstacles. And crunching all the incoming data will be a sophisticated computer powered by a top-of-the-line graphics processor.Unlike self-driving cars built by rivals Google and Uber — which have large, bulky cameras and sensor systems mounted on the roof — Tesla’s hardware will be integrated seamlessly into the body of the car, chief executive Elon Musk said.“Nothing is sticking out; this in no way makes the car ugly,” Musk told reporters Wednesday. “There are no weird protuberances. It’s incredibly subtle.”But just because the autonomy package comes installed does not mean that customers will be able to enable self-driving on day one. Musk said that further testing will be necessary before the feature can be switched on. The company plans to conduct self-driving tests on a closed track before opening it up to a select number of early users, a group that will include Musk himself.Then Tesla will slowly make the software available to more customers around the globe, gradually activating it in all cars in “shadow mode,” during which the cars will not be driving themselves but feeding data to engineers about how the computer might make decisions if it were truly in control.The Switch newsletter.The day's top stories on the world of tech.