OK, so a stainless steel tube carrying ore in capsules electro-magnetically propelled. On top of this a (very) light railway for passenger/tourist traffic. Perhaps a more practical vision than passenger carrying capsules inside the ore tube. But, even more economical, how about a plain old style pipeline carrying ore without use of capsules, along with a light rail for passengers only. Or a wild & crazy idea, a pipeline for ore with a light duty road alongside? Nah, no self respecting Big Money would invest in anything so boring. --