In article , Robin
writes
But could hyperloop deliver this for airside transfers? Many passengers
at an international hub don't want a transfer that requires
immigration+baggage collection+customs followed by baggage
drop+security+emigration. Not impossible but segregating "airside"
passengers (and their through-booked baggage) securely on hyperloop
seems to me non-trivial.

Actually that shouldn't be hard.

A couple of years ago I was at Taipei airport with a bit of time to
kill. They've got one of those transit "rail" systems like the ones at
Stansted, Gatwick, and Heathrow T5. The train was two units, with one
used for groundside travel and the other for airside travel. There were
staggered platforms on opposite sides of the track for the two so that
the passenger flows remained completely separate.

--
Clive D.W. Feather