On the concours issue, I agree with Tim. Many of these cars are driven. In fact part of the requirement for judging at the Pebble Beach Concours d'Elegance is a 17 mile road trip through the countryside. And not just Shelbys and other cars of that era, were talking million dollar Duesenberg's and multimillion dollar vintage Ferraris.
Most owners enjoy showing their cars, but also enjoy driving them.