15 minutes is long to prepare a bike for travel? Do you mean just fold it up, or fit in a suitcase?

I just put my Bike Friday (NWT) in a suitcase for the very first time last weekend as a practice run. It took me an hour, which included taking both racks off, struggling for a while to take one of the pedals off, front wheel (back wheel stays on), seat post, stem, one bottle cage. It should take me half that or less with more practice. For me even an hour is worth taking the bike along.
Here it is in the suitcase:
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