Just a random shot, but this is close to the types of cars we ran at our local track in Highland IL. (With Mr. Strangebrew in his fancy mod!)
We were dirt, but as he and anyone that raced can tell you, by the time the feature came around, that dirt was hot and hard packed with a surface close to concrete :)
Anyway, these are just a couple examples of what I personally try to create in scale for the series and thought maybe a few of you might like it.
I'm working on the NOVA mold now. I am seriously thinking of moving the Snap-Tite Firebird back on the list and search for an older Scalextric Cougar to throw in the mix. Not to mention a 66-67 Revogram Charger.