Your car backs itself out of the garage and onto your driveway and the door swings open for you to step in. As you close the door, you tell the car where you want to go, it downloads the route to your destination. Without having to touch a button, the car pulls into the street, and you set off.Though it sounds like something out of a movie, this reality is approaching. Autonomous cars are going to be on the road whether we’re ready for them or not.In fact, they’re so close, cars that employ some autonomous features already exist. Manufacturers such as Mercedes Benz, Toyota and Tesla are providing us the first stepping stones to autonomous motoring.Today, the Autopilot mode in the Tesla Model S is without a doubt the most advanced semi-autonomous vehicle available. With a couple quick pulls on the cruise control stalk, you’re completely hands- and feet-free. The car employs adaptive cruise control, so once you set your desired speed and following distance, the car will slow down and speed up with traffic in an effort to maintain your set parameters. No feet are necessary, as the car will brake itself all the way down to a stop if need be.The Model S also has Auto Lane Change, which only requires drivers to engage the turn signal stalk, and the car will change lanes all on its own.