Well, I've flown with my Boardwalk before (in a soft case), so certainly nothing bigger than that. It would be great if I could get this mystery bike to fit in a standard suitcase, but I know that might be difficult.

I'd be curious to see the 18" Birdy in person. I've seen people on Birdys in Shanghai, but have no idea where they're sold.

Spent a while at the LBS today looking at bikes. They've only got Dahons, but there are some interesting China-only models that look very similar to things like the Mu (same frame design) but for less money.

This whole thing was sparked by my Boardwalk being temporarily out-of-commission: the handlebar latch won't lock, and the LBS has had to order a replacement part. Having no bike to ride to work is making me antsy! Almost bought a new one on the spot.