Cars don't have to rely on lane markings ... we could run a wire under the asphalt and install cheap induction coils under the tractors ... and then cheap radar in the front of each ... but MOST IMPORTANT is the computers on each rig communicate with each other ... like non-self-flying airplanes do ... even just pinging the 1200 channel let's everyone in the area know who you are, what you're doing, and where you're going ...
You won't see this ... no one in high school today will live long enough to see any of this ... I know you think you'll live forever, and so partying like you gonna die young works ... but only for a little while ... first we have to remove passenger vehicles from the roads and all the bad drivers ... once it's just CDLs out there, then we can run 100 tons at 100 mph ... nose-to-tail-pipe ... the public transit you're riding fits right in ...