As you know Brian, I have had a few cavaliers in my day and I never had any rust on the 99 or 2002 one, but did in my 85 and 94............the 94 was lucky to keep the body on, lawl!
But...........I have also owned quite a few imports from my Nissan 300zx with twin turbos. That bish rusted to the ground after I blew a rod and it sat.......with a cover on it! My Datsuns I have had were rust buckets and so was my one Honda Accord.
With that said, they were all pretty old, but so were my American cars with rust.
So don't let that sway ya on your next purchase.
I have had better luck with Domestics than Imports. Much better luck!