I came across this in the news, and the meaning is unclear to me:
"Back in 1909, a layer of bricks was laid on top of the rock and tar surface of the Indianapolis Motor Speed Way. It has been resurfaced several times since then. By looking at a core pulled up from the track, you can see the difference layers of stone and asphalt that were added over the years. From top to bottom, it is like a trip in time down to the 1909 layer of brick at the base. Now that the photos of it has surfaced, they show layer by layer or lap by lap a gripping story you can trakh through the years by following the grooves that paved the way for generations of drivers to draft and drift down decades of unrevlimited, adrenaling fueled crossing the line where the rubber meets the road."
I know what the words mean by itself, but I have a hard time understanding their meaning there.