Does the suitcase have wheels by any chance. I'm thinking of taking my Merc to Barcelona. A wheely bag would be handy. I was thinking that I'd take my personal stuff in a rucksack, bike in a hard case, and then on arrival, pack my personal gear in the hardcase and mount it on the Merc's luggage rack to go touring. I'd fasten a 2 foot long aluminium rod across the back of the luggage rack and mount the case to that and the seat post for stability.

What do you think, would the case mount like that?