I have this idea of a new transport technology. It’s basically a monorail except rather than share carriages with people you have your own like a car. The monorail can deliver you to your driveway with it branches. It sits > 10ft above ground allowing some of the old roads to be for bikes, children and redeveloped into green spaces. The monorail sits on posts that means it can be installed alongside existing roads whilst it takes off.

Cars/cabs will be computer controlled and self-driving, obviously unable to leave the rail, and can be summoned or shared as a family. Self-parking. Take you home drunk. Usable by teens independently. Powered by the rail they’re on. Technology wise each cab has an electric motorbike engine and is otherwise your own customisable swinging box. One day you could pack your shit into it then sleep inside and wake up on a far away beach for your holiday.