Alternate route home: FAIL

Michigan has a classic car rally that brings nearly a million people ( i kid you not) to the vicinity around my office from Friday through SUnday. It's called the Woodward Dream Cruise, and it's a real pain for those with plans to get home from work. I took an alternate route...
And failed to see the construction sign. Appraently i wasn't the only one! Then I saw the school sign, but too late. I turned aroundk, only to be teased by the other side of the sign.
I swung back around to take a picture of both signs, just in time to catch the Corvette making the same mistake I made!!