I see that in your link it indicates that if I keep the gun locked up in one case and the ammo locked up in another it would be OK. On another site it indicated that as long as I was on my way to target shooting (formal or informal) it is Ok (if properly secured).
Like Triple R said, there is no guarantee that the officers even know the law. Maybe I'll just go around.
To me the biggest fear of having a CCW is the possibility of racking up a felony if you don't mind you P's and Q's. In this case it could be at the whim of a Maryland State Trooper. Mind you I'm not paranoid, but I don't want to leave myself open for something stupid to happen either.