&gt; Anyone who looks at self-driving cars from an engineering perspective know that there are still many challenges.<p>I&#x27;m not an engineer but (having started as an optimist about autonomous vehicles) I detect the whiff of vapor-ware about them. It seems everyone&#x27;s saying how amazing they are (which is true if they work) but nobody has yet made them work, at least as a consumer option.<p>Shame more people don&#x27;t quote references as you have. Makes for a more interesting conversation and gives an opportunity to modify a viewpoint or two.