Spotted at the State Fair of Texas, in General Motors' booth. The workers were just putting up this apparently professionally-made sign.
I don't know what's sadder - the fact that nobody responsible for making the sign caught the error, or that most of the public won't know what's wrong with it, either.
Updated: GM's U.S. office just sent me out a press release - its "Weekly News Summery." Did they have to forfeit all their dictionaries as part of the restructuring?