just over a year ago, but new details have emerged that pin the E-Class as the first model to bring the innovative tech to well-heeled buyers. By monitoring brainwaves, Mercedes' engineers were able to identify approximately 70 parameters that can be used to judge fatigue. The whole system, however, depends upon a much more accurate steering sensor that can pick up on sluggishness or other behaviors which could indicate drowsiness or distraction. When the system deems you to be sufficiently distracted or sleepy, it beeps loudly and displays a coffee cup in the dashboard, indicating that a little caffeine is the only thing standing between you and a safe journey. We're not sure how this will effect our plans to plow our $60,000 car into a snow drift because we were listening to Music for Airports, but we figure we'll find out soon enough.