A few things melded I suppose.
1. I like to drive and am a bit competitive, I "put" myself in the car
2. I am one of those exposed to wrenching
3. I had a job that found me in front of a radio every Sunday afternoon and it was on the easiest to hold radio station in the area.
I became fascinated by the drama, the weekly "showdown" between the stars. I grew up in East Central Illinois. Several drivers are from the midwest, Alan Kulwiki Jeff Gordon (yea I know about Ca.) Tony Stewart, Matt Kenseth, and Kenny Schrader among others. I watched several of those drivers at a local track at some point. It was fun to root for the home team as it were.
Seeing racing live makes a heck of a difference. Starting at the age of 5 makes a difference too. A well run local track keeps the action moving and might give you the idea of what I'm talking about. For you I might suggest River Falls Wi. area Cedar something speedway. Dirt races have more action as a rule.
Finally, if you want to go "all in" I will make this suggestion. Go to the fall race at Talledega, Al. The racing is strange , but that leads to just about every driver looking like he has a shot at some point during a race. Nothing beats the feel of "your" driver coming up through the pack. Plan to arrive as early as the campgrounds will allow (do camp as hotels are tough to come by). It is a county fair by any other name. Visit all the sponsor displays, many many are interactive. Watch the practice sessions watch qualifying, watch just about every on track session you can. Go with the idea of getting into it, enjoy the people.
I would advise getting a scanner to use at the track, rent, borrow, or purchase, talk to lots of folks who have one and figure out the best way to use it. i listen to the TV feeds and have a few drivers set to pop in rather than scan everything as that becomes very confusing. Do take your wife and kids I have and they all enjoyed the experience, maybe not the racing, might be the sponsor areas might be the autograph seeking.
NASCAR has gone to a TON of effort to make it an entertaining family event. Honestly, Disney has nothing on them here. Okay, more info than you wanted no doubt. Maybe I'm still rabid.