It’s not as if Mike Riley, president of the Motor Transport Association of Connecticut, is going to stop the state’s use of salty corrosives on state highways. Riley brought a lobbyist’s version of show-and-tell to the Legislative Office Building today, including various corroded trucking equipment, to illustrate his theory that the DOT’s current slurry of choice, a magnesium chloride brew, is aging the undercarriages of trucks and cars alike. He may get a study bill, but that’s the best he can hope for. So why not, he must have figured, before asking the Transportation Committee to consider legislation that would create tax exemptions for vehicle parts and labor.