Edema is the medical term for swelling. Body parts swell from injury or inflammation. It can affect a small area or the entire body. Medications, infections, pregnancy, and many other medical problems can cause edema. Edema happens when your small blood vessels become leaky and release fluid into nearby tissues.
Audi's adaptive cruise control is available on most models as part of the Advanced Technology Package or Driver Assistance Package. BMW's adaptive cruise control is available on most models as part of the ACC Stop & Go + Active Driving Assistant addition to the Driver Assistance Plus package.
Adaptive cruise control has been around longer, but these systems have only recently been able to make use of automatic braking. One of the first automakers to roll out an adaptive cruise control system that can brake to a complete stop is BMW, which introduced the feature in 2007.