Probably not much different from my jumping on a plane
with Sansonite
briefcase full of 2400' 9 (and 7)-track tapes in the 70s. I've flown on an
AF general's plane for the purpose of transporting several 844 disk packs
also.
Someone once told me "never underestimate the bandwidth contained
within a station wagon crammed full of DLT tapes."
Figure a trunk-load of 20Gb tapes would be maybe 300 tapes. So maybe
5-6TB traveling at 65 mph between data centers.....