For David: Maglev is the most practical (i.e., cost-effective) rail system. There is no need to rip up existing guideway, just install Maglev 2000 panels between the tracks to enable both maglev and procured steel wheels systems to operate. A pause will result in huge savings if conversion to maglev is made. And I know some pretty smart people at UH.
For Kana: Maglev is a real alternative and Asian nations are operating and planning urban maglevs in a number of cities. FYI, maglev never “lost the argument.” The Nagoya maglev was not allowed to participate in the rail competition, only steel wheels systems. If you or David would like to set up a public debate, I would be happy to take part.