Definitely worth visiting, even if you are not a big car fanatic. This is a working shop with a small museum and gift store. The museum has about 25 cars, and some info on Mr. Shelby and his business history. Very very cool cars. I brought some friends who really expected to hate it, and they had fun. If you are not a car nut, you can knock it out in 30 minutes.
I bought 2 T-Shirts for me and friend, and you probably will, too (the designs are great)!