I actually mean the SkyWay by Yunitsky - on his website he claims that the Phillipines have expressed interest in his string transportation system http://www.yunitskiy.com/author/english.htm

His company is not the only one - there is one in US, too (and maybe someweher else as well).

And as for the ghosts or spirits goes being non-corporeal enables them to be sneaky (...aah, just todays movie).