The camera does everything from seeing other cars to reading speed limit signs. Normal fare for luxury cars. Except it will also do a lane change for you just by pressing the turn signal stalk.

Last night, Elon Musk took the wraps off the new Tesla Model S. Dual motors and all-wheel drive don’t just make it faster, a new sensor array will make it safer too. Let’s break out each innovation, figure out what it is and how it works.

Dual Motors: Putting the “D” in the Tesla Model S P85D, an electric motor has been added to the front of the car, driving those wheels. Previously, the Model S was rear-wheel drive only.

That motor develops 221 bhp, [...]