If it were anyone but Posner, this project might be seen as a crackpot idea with little chance of success. But Posner is the co-founder of Railroad Development Corporation (RDC), which owns Iowa Interstate Railroad along with operations in England, France, Germany, Belgium, and Peru …

https://www.trains.com/trn/news-reviews/news-wire/pop-up-metro-aims-to-provide-affordable-passenger-operation/