The day before the Concours they hold a hillclimb (the grand ascent). Last year Wayne Carini was there with a Porsche Special that he spanked the field with. My favorite car was a 1911 Mercedes racer that was weeping, dripping, leaking & pouring oil everywhere. It smelled & I liked it.
I think it was $10 to park. I didn't go to the Saturday event because no racecars racing.