More Self-Driving Vehicles

Greetings,
Earlier this month, I posted on the future of self-driving ships.  Last month, I was in Pittsburgh, PA.  One of the big things happening in Pittsburgh was talk of implementing self-driving cars.  Uber was in the process of launching self-driving cars.  Pittsburghers were very excited about it.  Historically, Pittsburgh's had an image of being a rust belt city with more than its fair share of steel mills.  These days, the town's looking more and more like Seattle or cutting edge Silicon Valley.  Today, Uber customers in Pittsburgh can ride in a self-driving Uber vehicle:
http://www.nytimes.com/2016/09/15/technology/our-reporter-goes-for-a-spin-in-a-self-driving-uber-car.html

Other self-driving applications include self-driving tractors:
http://www.wsj.com/articles/farmer-show-visitors-marvel-scoff-at-self-driving-tractor-1472747625

Who would have ever thought?  Apparently, the new technology has generated considerable interest as well as some safety concerns.  Nevertheless, no matter how you look at it, this is an emerging technology that has the potential to change transportation and even how crops are harvested.