meet rex:

i've done it. i've bought a suitcase on wheels. it is black, it has several nifty pockets with zips. it has various handles, including one that pulls out so you can tow it behind you like it's your pet luggage. it has wheels.
but don't abandon me here folks! i'm sure there are other nomads in the world with suitcases on wheels. i'm sure the mongolians would have them if they had smooth surfaces to tow them on. likewise the aboriginal australians.
the reality is that we have a luggage allowance of 2x23kg each and one carry on bag. that's a lot of luggage. but we have a lot of stuff. a lot of stuff. and being firmly in the pregnant department i can ask for a special seat on the plane, but i can't carry my luggage. i need those wheels godamnit! i also need to come up with a cunning plan to magically make my 20kg piece of hand-luggage-with-wheels (he's called rex, and he is house-trained) look like it's only 5kg.
any suggestions?