I've got all the Corky's programmed into my Garmin. :D
They've got 'em in all kinds of places; Biloxi, Monroe, Metarie, Lexington, Nashville, Jackson, Murfreesboro, Knoxville, Evansville, Jonesboro, even Caruthersville.
I've never tried Interstate. I'll have to put that on my list. But man do...