Admission is free and they offer a FREE tour everyday at 10:30AM. You have no reason not to visit.
Seeing the cars is pretty cool but the tour tells you the color history behind each individual machine on display. The tour guides did an excellent job telling the Shelby story. My favorite was the blue Shelby cobra nestled in the corner. The paint was a little worn and the driver's seat was completely torn up. It was Carroll Shelby's fist cobra that he used when trying to make a name for himself.