I rarely go near the car show areas, but the facility at Fontana could hold what--50,000 cars--what's wrong with the facility other than the way it is being utilized?
Bakersfield didn't seem to be lacking anything at this year's March Meet, but yes, it is a little dusty. Come check out Dragfest this year; it won't be quite as dirty as the March Meet, and there will be a lot more bimbos!
Irwindale is missing half the length of it's strip, but it never lacks for show cars at the Mooneyes or VW events. The problem there is having to share the pits with the racers.
Pomona would be ideal, but with the people that run Super Ch...OOPS!, I forgot, you have to be careful that their legal department doesn't see this. Gustin and his band of bufoons threatened legal action against me for using the name to describe where I shot the photos during my last visit to his circus.