While it is true that you can only drive one at a time, having a spare, fully prepared race car is a necessity, it seems to me.
That way, you can try out two different setups, back to back, and have your spare car in case something breaks while at the track. After all, the NASCAR guys all have backup cars, and we can't be less than those guys.
Time to make the 88 track car another full race spec car, get a motor home, add a stacker trailer and get with the program. With that, you can find a race just about every other weekend within 1,000 miles, or so.
Feed the addiction, starve the family (or something like that).
Big Dog