We'll see, we could be deluded but the "GadgetBahn" claim seems an emotional decision.

Cell phones in 1984 would have been claimed as "GadgetBahn".
I am sure the Wright Brothers and Ford were told something similiar.

This quote, written by Dr Patrick Driscoll, is taken from West Point's Decision Making in Systems Engineering and Management.

In fact, one of the most significant failings of the current U.S. transportation system is that the automobile was never thought of as being part of a system until recently. It was developed and introduced during a period that saw the automobile as a standalone technology largely replacing the horse and carriage. So long as it outperformed the previous equine technology, it was considered a success. This success is not nearly so apparent if the automobile is examined from a systems thinking perspective. In that guise, it has managed to fail miserably across a host of dimensions. Many of these can be observed in any major US city today: oversized cars and trucks negotiating tight roads and streets, bridges and tunnels incapable of handling daily traffic density, insufficient parking, poor air quality induced in areas where regional air circulation geography restricts free flow of wind, a distribution of the working population to suburban locations necessitating automobile transportation, and so on. Had the automobile been developed as a multilateral system interconnected with urban (and rural) transportation networks and environmental systems, U.S. cities would be in a much different situation than they find themselves in today.

What is important here is not that the automobile could have been developed differently, but that in choosing to design, develop and deploy the automobile as a stand alone technology, a host of complementary transportation solutions to replace the horse and buggy were not considered.

I am pretty sure the will be a mix of alternative transport solutions. I would recommend letting anyone try anything they are willing to risk their money on. Reality will sort out what is practical.