When you see this type of single file parades on these pavement joints I often wonder why the tracks don't apply some sort of sticky substance on the outer groove to enhance the racing. I know the NHRA drag guys uses something called VHT traction compound. That stuff will pull your shoes right off your feat & could create the adhearsion needed for side by side racing. Anyway you'd think they'd do something to help promote multiple grooves on these type of tracks. It's a shame as that stuff USAC is broadcasting right now is not racing, not even close.