If you need a weekend out, try the Simeone Museum by the airport.
Simeone Foundation
USA Today
They have the 1970 runner up Salzburg 917. Awesome place. The guy is a car nut. Other fun items are a Daytona Cobra not restored that ran Bonneville, Cunningham CR-4, a GT40, Jags, Alfas, and just racing porn. Great layout. Leno has some info posted on his site. The Daytona Cobra was incredible. Worth the trip.