Back in the days when men were men, guys like Jerry Unser would race new Detroit iron in the “stock class” at the Pike’s Peak Hillclimb. Roll cage? Nope. Nomex? Nope. Six point harness? Nope. Margin for error? Nope.
If you’ve ever driven one of these prehistoric beasts on the street, you’ll have an apprecaition for the kind of huevos it took to slide one up the dirt road to the summit of Pike’s Peak. Those old bias ply tires didn’t offer much traction (especially on gravel and dirt), and the drum or disc/drum brakes didn’t offer much fade resistance or stopping power. Slide off the mountain, and you have a while to ponder just how much the landing is going to hurt.