For Christmas I went to France to visit my family in Besancon (eastern part of France, about 70km from Switzerland). But instead of taking the train to go home as usual, I planned to bike home. 400km, I would take 2 days since it would be cold and I would be tired from jet lag.
The Bike Friday went through airport security and plane travel without any problem. I unpacked it in Paris in the (very small) room of my youngest sister, and loaded it with a good deal of cold weather cycling clothes. The next day, instead of sleeping in late as any intelligent person does on a sunday, I took off at 6am. I exited Paris with the subway until Melun, and started riding from there. The day went without any problem, going from small village to small town, always taking remote roads with little traffic. I covered about 250km before 8pm. At which time I discovered that it is very difficult to find a hotel room on small roads in December... I happened to arrive in Montbard, which is on the train line between Paris and Besancon. And decided that instead of looking for a room in the freezing temperature and my wet cycling clothes, I could as well sleep in my own bed, then bike around town in Besancon.
A few days later, I was back in the train to Paris with the Bike Friday, to meet my girlfriend Chihiro at the airport. Since I was in advance, I spent the time cycling around in Paris. Biking in Paris is great, you can go everywhere in a minute and see all the town in a couple hours.