Premise: The Vintage Sports Car Club of America (VSCCA) is American auto racing club and sanctioning body focused on competition and sports cars made before 1959. It was founded in 1958 and currently runs a year-round schedule of track, hillclimb, rally, and social events primarily on the East Coast.
Hypothesis: The rally events held by VSCCA mostly have cars from the 1950's, but the track events don't.