So, curiosity got the best of me since I have a Nvidia GeForce 4600 Ti. I downloaded the MOHAA demo. I've played it several times and still don't know what it is I'm supposed to be seeing. Help me out here please.

Is it the banding across the top of the halftrack when you zoom in? Looks as though there are "waves" of smoke moving across the surface of the halftrack?

Comparatively speaking my system bites so maybe, I don't know what I'm missing in my gaming experience?