Guardian angel technology would be able to learn over time, even picking up on user’s driving habits so that it could spot trends that could lead to accidents and advise the driver to make corrections that would prevent a crash from occurring.  A lot of the discussion among automakers and within their R&D organizations involved how much control the car should have. For example, Pratt said, your car may someday warn you several times about a particularly dangerous driving habit you have before taking control of the wheel.