what was the clash called before in nascar
Advance Auto Parts Clash The event was originally known as the Busch Clash, and consisted of a 20-lap/50-mile, "all-out sprint" for the previous season's pole position winners (considered the de facto "fastest drivers on the circuit"). In its current format it is made up of two segments, a 25 lap start that then culminates in a 50 lap final segment.