It'd be awesome if we could get the utilization ratio up. Any given section of highway has a vehicle over it let's say 1% of the time. Rail's utilization factor has got to be 1% of that.

My Sci fi dream is carrier trains, where a car is disaggregated into a pod and a skateboard. But one can drive their vehicle to a train & the pod comes off & mounts onto the train with standard mounting & then gets dropped back onto a rental skateboard at the destination.

Or maybe if we had right sized e-transit with ebikes & small e-cars, we could just ride on/off regular trains, quickly & efficiently.