There are 2 choices - you can go in and look at the cars for free. Or, you can pay ($59, I think) to take a guided tour - this comes with a gift bag with Shelby merchandise in it. We opted for the free tour. My girls had absolutely no interest in this, but hubby, son and I really enjoyed it! Beautiful cars. Great info. Totally suggest this! If you're not into cars, there are some benches to sit on while you wait - they are inside, so out of the weather. There is a shop where you can buy Shelby merch - t-shirts were $30, so not totally outrageous.
And, I'd just like to say that if any of the owners of those vehicles (some are on loan) feel generous and wanted to let me drive one of these for a little bit that would be ok with me!!