The only problem is that it's setting the bar too high for many people.
I mentioned a Dart somewhere else, so it's good someone made one. Then the Belvedere revives a car from SR2, which is also one I'd probably want. The fact that the moon discs have now been modeled is also great. It's hard to imagine genuine muscle cars without them (although many had something fancier). You certainly wouldn't see anything that plain today, anyway.
It would be great to get some tips not only on weathering, but also how to simulate chrome. I haven't figured that one out yet. There are lots of ways to do it, but all of the methods I've tried are flawed. Also, I presume you have a library of technical drawings, which is something I lack. When I model something, I usually have to resort to tracing photographs, which involves a lot of clean up later. For engines and parts, it can be next to impossible unless you have the actual object in your possession. If you have a good source for drawings, that would help a lot.
As for poly counts, I presume a large poly count will be acceptable if A, tablets don't take over and wreck computer performance, and B if the graphics quality can be turned down in the prefs.