I have to complain that the WSJ&#x27;s title is completely backwards.  Petroski&#x27;s article is about the sensible topic that <i>self driving cars aren&#x27;t ready for the typical real-world chaos</i>.  In fact he glossed over Audi&#x27;s &quot;99% of the trip was autonomous&quot; claim -- that 99% was on freeways which while hard, are well structured.<p>I can&#x27;t wait for self driving cars for a jillion reasons but I am dismayed when advocates claim that the infrastructure must change to support them.  That&#x27;s completely backwards: our tools should support us, not the other way around.