I know there were discussions about bikes sweating sitting on concrete floors. I was told today by a HD service manager that I should put a rubber mat under the bike to keep the condensation off. I park my bike under a covered driveway with my cover on it (with 4 locks and the security system :s), not in a garage. I have never seen my bike "sweat or drip" as what some have referred to. Now I have seen to where it looks "fogged up" on the surface. Has any one done/tried using a rubber mat on concrete for this purpose?