&gt; The average US driver has 1 accident per 165000 miles (which, like the unusual tendency for the Google car to get bumped when stopping at junctions, may or may not be their fault) and that&#x27;s including DUI as well as people driving in slightly more difficult conditions than sunny surburban California.<p>The average driver doesn&#x27;t do all city miles and that&#x27;s why Google&#x27;s cars have gotten bumped. Highway driving is much easier to automate (several cars already do this today) and makes up a large percentage of total miles driven.