Yeah, the definition of what an indoor "dirt" track consists of nowadays is pretty depressing to guys like me who know what the real thing looks & drives like.
The place I race at now is your average carpet onroad track, the owner keeps the road course layout for the week but on Friday nights we take whatever chunks of infield wall and other random bits of wood we have lying around, randomly arrange them around the track, cover them in pieces of old rugs and race Slash.
Here's a vid of one of our race nights from this past fall