there are so many stories out there. I don't know what's fact and what's fiction. But I could see some kind of mag-lev trains running routes in underground tunnels.
if Hildebeast or other elites wanted to pull a runner, they'd have to avoid the airports, avoid the regular highway system, and major sea ports. So if the underground is an option for them, they might try to escape that route.
even if the Pence/Ryan ticket info is legit, I still wouldn't take that as evidence that Pence is comped. It's evidence he's a savvy politician who realizes the winds could change direction at a moment's notice, nothing more.
Having said that, I don't trust Pence. He seemed to have been foisted on Trump by the RNC when Trump himself wanted Flynn as VP. Trump has more than earned the right to select his own VP without RNC interference.