It would also be faster than the old Goon Show concept of horse-drawn
zeppelins.

Yes, it would effectively take the speed and omnidirectional attribute of air travel and relegate it to the pathways and speed range of a railroad. And only if you can find a rail line that has no tunnels, bridges or power transmission lines crossing it. And you now eliminate travel to destinations that have no existing rail lines.

It's like taking a wireless voice communication system and turning it into a teletype. Oh, wait- That's the iPhone.

Being well-regarded in technical circles does not necessarily mean you won't come up with a bad idea once in a while.

Next up: How to make an ASG-29 perform like a paraglider.