Comment by Ray20

>Think 3D-printing that was supposed to take over manufacturing

This was never the case, and this is obvious to anyone who has ever been to factories that doing mass-produced plastic

>Or self-driving, that is "just around the corner" for a decade now.

But it is really around the corner, all that remains is to accept it. That is, to start building and modifying the road infrastructure and changing the traffic rules to enable effective integration self-driving cars into road traffic.