AAQ,
“Give the guys their due – they figured out that it is easier to travel on Yom Kippur than on Sukkos. Drilling holes was not approved. You can say that cold temperature outside is enough of an exemption.
On the other hand, if the whole capsule lives for less than a week, can it qualify as a temporary dwelling?”
While find that a yoitze laderech is patur from Succah, we find no such heter for yom kippur. , you really need to ask better questions.