I don't think the economy has a huge impact on race team sponsorships. The fact is NHRA is a poor choice for advertising from an ROI perspective. Sure a great economy in theory will yield more butts in the seats, but right now, not only are people not going to the races, they aren't watching them on TV. For the first time since the TNN days, I did not watch any of the Western Swing races. Outside of some semi-surprise winners in Pro Stock, I don't think I missed much? Its just too plug and play these days. If you have a zillion $'s, go out and buy AJ's stuff and you can be an instant contender. If you don't have the $, TFB. In the "Good OL" days, if you were a bad ass mechanic or fabricator, get a few of your buddy's and go mix it up with the big boys. The Chi-town Hustler comes to mind.
The bad news is banner ads on Facebook are a ten fold better advertising option compared to NHRA. Folks today prefer to kill brain cells indoors online (Hey, that's what were doing now, right?), rather than outside sniffing nitro. The great news is NHRA is making big moves to improve their TV position!