Apparently you haven't been following along like everyone else because this issue has been addressed more than once before.
Not only that but do you think vendors like 4wheelparts, Crawl, No Limit, Monster, etc, etc would have sign up to sponsor this event if they didn't feel like it was a sound investment? Trust me there putting in alot more $$ then you as an individual racer's entry fee will be.
But if your still worried refunds are offered on entry fee's until April 25th so you can pretty much get your money back right up until the event rolls around.
Sorry to be curt with my answer but like I said we've already dealt with this same concern more then once now, and us especially of the race committee are bustin our butt's, volunteering our time to try and further our hobby and sport
Like I said sorry to get a little upset, just getting annoyed thats all,
I hope to see you at the race