First of all, considering the less than stellar support for the modified class, from sanctioning organizations, and track promoters, 29-30 cars is a good showing. Factoring in the towing costs, and time away from full-time jobs, as previously mentioned, makes this a daunting task, for most of the modified teams.
One thing that hasn't been mentioned, is weather. I was viewing the 'Weather Channel' last evening, to see how severe the snow storms will be here, in the northeast, and I was quite shocked to see the thunderstorms, tornadoes, and flooding that's occurring in the southeastern United States. It looks like some of the racing may be affected, as well as the ability of the teams being able to return home, as some major roads are being heavily damaged by overflowing streams and rivers.
Be safe, everyone!!