I&#x27;m not sure about that.  Keeping the cars closer together would suggest more abrupt acceleration and braking to such to avoid space being created as the car ahead accelerates from a stop.  Given these accelerations will not be initiated by the driver, they will come as a surprise and thus be more jarring.  I imagine that might result in autodrives that accelerate&#x2F;brake more slowly, leaving greater distances between cars in stop=and-go environs.  And I cannot see autodrives leaving much less room between cars while in steady motion or stopped.  Humans are pretty good at tailgating.