Why assume that accident rates will drop in the all-autodrive scenario?<p>I haven&#x27;t seen any such testing.  I have seen many miles of google cars in amongst human-driven cars.  I have yet to see any tests involving thousands of cars from a variety of manufacturers (and ages) all trying to drive together.  To assume that the robots will cooperate perfectly, negating the needs for safety features ... wasn&#x27;t there a movie about that?  Big lizards in an autonomously-run park?