I've replaced more than one rear axle on Windstar/Freestar at work when they came in on the flat bed with about 10* negative camber in the rear, and those had the recall reenforcements installed. Rotted right in half. We replace front subframe (cradles) on Taurus's frequently. There's an outfit here that brings them in by the truck load from down south. Focus LOVES to have the front control arms literally rust in two and hopefully you aren't going very fast when they let go. Mentioned this on "the other site" I think, we see vehicles (usually pickups) with holes in the rockers, cab corners, above the rear wheels as new as 2014. Replaced a couple brake lines on a 2012 Malibu last week,,,,,,,,rusted through and leaking. For all the rust prevention measures they take, or don't take, seems vehicles rust out quicker than they have in 20 years. The joys of living in Wisconsin (or MN, MI, IL.................) A couple weeks ago, a 2011 F-150, went to lift it on the hoist, heard a crunching sound. Frame was collapsing where the hoist pad was, Sad. We've had people scrap not very old vehicles because of rust. One that comes to mind is a 2010 Toyota Tundra with under 50,000 miles. Frame so rotted the box and cab were jammed together,,,,,,,,,,and that was a couple years ago already. My favorite is when iron cylinder blocks, heads or exhaust manifolds rust through, not to mention steel oil pans. Even had a mid 2000's Silverado in last week with a leak. Was from the transfer case. It had a hole corroded through the aluminum. I guess it's all called, "job security".