Transportation Policy - Getting Ahead of the Future

Red shows surface parking, yellow shows above-ground parking garages, and green shows park space

We all know where this is going right?  With Google, Amazon, Tesla, every major Auto company, and high tech firm lining up to develop driverless electric cars and car sharing we all know that the shifting paradigm of car use is going to reinvent our cities.  So why is it that transportation planners are still designing streets like we're living in the 1990s or worse?  The days of cars sitting unused 96% of the time taking up urban space is coming to a close.  Fewer autos constantly circulating as needed will reduce the overall footprint that automobiles will take in our cities.  People know this isn't science fiction anymore.  It's happening.  And yet we have urban designers being cowed by shops that demand a free parking spot in front of their boutiques instead of a pleasant place to walk and bike lanes and art and greenery.

It's not that person driven cars are completely going away in the near future.  But even in smaller cities an educated guess would lead you to believe driverless cars, combined with car sharing, will dominate the roads by the end of the 2020s.  That's a mere decade or so.  So when urban "Master Plans" and the "Reimagining" of cities is occurring locally and around the country, who is considering this paradigm shift that is coming?  And what do we do with the amazing amount of urban space that is earmarked for car parking right now?