Saw an interesting beast in Stratton Cycles today. It was a Dahon road bike, with reasonable equipment, it seems. Not strictly folding, but demountable, with the two main triangles separating completely, so it can be packed very small for travelling - into one suitcase maybe?
Pretty neat, I reckon. Reminds me of a Ridley model I saw reviewed somewhere a few months back. Breakaway, IIRC...
Price was over £1k, but I can't remember how much...