Looks like you were lucky it was not in too tight.
I have a roof rack but don't carry the bike up there too often. When I do I put a "BIKE!" Post It note on the rear view mirror.
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84 Bridgestone 400. 90's Basso Highway, 07 Rivendell AHH, 16 Clockwork All-Rounder , 22 Rivendell Roadini