[NHRABill]

The tech is out there to have a cruise control follow or tail a car at a distance as well as brake for you if you are too close.

There are thousands of sensors and calcs that a car already does for AWD judging traction as well as suspension sensors that auto tune your ruide. This is not new this is just different using a program and some added sensors a car can judge the grade of the hill and its distance to the bottom.

keeping the system nothing more than a glorified cruise control that works in reverse to maintain speed by extending its knowledge of what is ahead you can set max and minimum speeds all else is no different from what you now have. You wouldn't use cruise control in middle of a city and this is not an autopilot. It will help increase your FE on those longer highway commutes better than a non hypermiller could do. Lets face it even the best hypermiller slacks sometimes by a distraction this wouldn't and it would make up for its ineffiencey by being perfect when engaged.

Sounds Like a cool "Eco" "Green" or whatever the trendy word a car company is using, thing to do