Considering that the car would have sensors, it could probably do a better job of avoiding the deer than you. I’d be more concerned about adverse road condittions, than anything else.
http://www.youtube.com/watch?v=AExusyOAD5s
your car could be in communication with vehicles ahead gaining information about local road conditions ~ spot ice, water puddles, dead pedestrians in the roadway rather than in the median where they belong ~ in very short order the fully equipped stand alone models will become networked!