You may get away with just taking off the wheels.
Here I have a 20inch wheeled folder with a similar fold to Dahon's:
Speed Uno(similar to Mu) squeexed in a S & S backpack(26" X 26" X 10").
Just took out the seatpost for a more compact fit. This is a soft luggage:
Dahon Speed Uno in S & S Backpack by
1nterceptor, on Flickr