Mercedes has taken another step down the long road to autonomous driving. We’ve mentioned that the new Mercedes E-Class will debut at the Detroit Auto Show in January. Now we’ve learned the car will be able to change lanes by itself. The system is called Active Lane Change Assist, and it’s activated when the driver signals for a lane change and holds the stalk for more than two seconds. The car then waits for the next possible opening and makes the lane change when conditions allow. Mercedes-Benz says the system will work in tandem with a Nav system and only activate on appropriate roads. Looks promising, but we’ll reserve judgment until we try it.