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xkcd #3124: Grounded
(imgs.xkcd.com)
Title text:
We should have you at the gate in just under two hours--two and a half if we get pulled over.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3124/
ah, that explains my confusion - thank you for clearing that up!