Now, the new S-Class doesn't literally "drive itself" but it almost certainly could if the engineers at Mercedes had wanted it to.
When you're on the highway, the S-Class will automatically maintain a safe distance behind the car ahead. By itself, that's nothing new. Lots of cars these days have so-called Active Cruise Control. Like some other automakers, Mercedes' system functions even in stop-and-go city traffic.
But the S-Class takes things even farther than most. The new S-Class actually steers to stay in its lane, even around curves. You do have to keep your hands on the steering wheel, though. Take them off for more than a couple of seconds and the car gives control back to you. Mercedes doesn't want you forgetting that you're still in charge.
An association with actor McQueen can multiply the value of a machine.