maglev roads

bigger populations will lead to increased traffic congestion 

and to avoid traffic congestion on highways 

two things are needed 

fully autonomous cars 

and significantly increased speed 

fully autonomous cars are needed to avoid mistakes 

that lead to traffic congestion 

and fully autonomous cars are not that far away 

for example: 

if there is a massive traffic queue on an asphalt highway 

with cars driven by humans 

and all those cars are fully autonomous capable 

then those cars could switch over to fully autonomous mode 

and start communicating with each other 

and then all those cars would move together as a unit 

and flow around obstacles such as traffic accidents 

I've been thinking about that scenario 

since I was a child or young teenager 

increased speed is needed 

so that more cars will be able drive on the highway per hour 

but to increase speed on highways 

maglev roads are needed 

if maglev roads were built 

with civilian commercial technologies available today 

then it would probably be segments of technology 

placed near each other under and in the road 

but if room temperature superconducting magnets 

were made from carbon nanotubes 

then the road could be weaved from carbon nanotubes 

which would make it a lot quicker and cheaper to build maglev roads 

but then again 

if room temperature superconducting carbon nanotubes 

were made available to the civilian commercial market 

then that would radically change every industry 

the maglev cars would drive with their wheels on asphalt roads 

and then when a maglev car enters a maglev highway 

then the maglev car would lower a maglev plate 

from the car's undercarriage 

and the maglev plate would start hovering above the maglev road 

while the maglev car's wheels retracts upwards a bit 

and then the maglev car would hover entirely above the maglev road 

while the speed increases to probably around 500 km/h