"and rides a boom tube to the city (which is, if you think about it, a much better way to go, then say, by the subway or driving though the tunnel.)"
Except for the time when Barda and Scott used her megarod to transport their car into NYC and end up straight in the middle of NYC traffic. A couple of cars almost ran into them, which would have been bad because they're usually lacking insurance. Plus Oberon could have died.