No, I thought of rails but assumed they'd be completely redundant by this time so I went with squishy balloon tyres or anti-grav. It struck me that opening up new seams and closing down old ones, plus taking the tubs to the loading areas would require so much labour on building, dismantling and moving the tracks it would be a bit pointless. So yeah, step ahead of you there my love ;)<br/><br/>Edited:  I re-read Kristina's profile of Dr Kimb!