IEEE Spectrum asks When Will We Have Unmanned Commercial Airliners? – : “To win over the public, the autopilots of tomorrow will have to start today by exploiting niches where civilian pilots can’t or won’t work—just as was the case in the military. With time, the systems will improve and eventually fan out to conquer additional segments of the broader market.”

Adam Ozimek @ Modeled Behavior describes The rise of micro-markets: “I also sometimes comfort myself knowing I would be outbid in micro-markets. If I’m two minutes late for a train and I find myself thinking “surely the welfare gain to me of them waiting two minutes is bigger than the loss to all the other passengers for being two minutes late!”. But then I consider an auction where I had to buy off every riders’ extra two minutes, and I know I would not win that auction, which I find comforting in a way. When micro-markets like the one I imagine here are real and widespread people will have a less hard time deluding themselves like I initially do. The angry guy in line behind you in line who is mumbling about how late he is running will have less grounds to be angry if he can offer you to buy your place in line but it is not worth it to him.”

Getting Around Minneapolis finds maps of the diffusion of street pavements1895 Paving Map , See also 1899 and 1910.