They never seem to lack for fans or cars either Winchester 400 weekend or Labor Day weekend, but I've only been there outside of those races a couple of times. One of those was ARCA weekend this year when it rained off and on both days. Parking has always been an adventure all 6 years I've been to the 400. Fortunately, I live close enough to drive in Sunday early and try to find a spot somewhere. Not sure where they can expand, but its a nice problem to have when that many cars, 201 total, and that many campers all want to be at one track.