I'm still following, just been hung up working (I work retail, getting ready for black friday). I will look into Borgers, I know a few friends of mine have raced go-karts there and have heard its a good track. I haven't gone to any flat track races as of yet, to spectate or race
Edit: Just went on their website, they're an asphalt track, I'm pretty sure when my friends have run, which was probably 10 years ago, they were dirt.