2006 Honda Pilot suspension problems

With less than 1000 miles, I began noticing a vibration problem on my '06 honda pilot. Vibration felt in seats and steering wheel. Although can be felt at lower speeds, more pronounced @ 55 - 70 MPH. May have been there from delivery, but did not have the opportunity to drive any smooth roads here in pa. For first few weeks. Dealership acknowledged problem and worked for two days to eliminate, checking tire balance, drive train components and run-out on rotors.

While pulling into a parking lot a loud bang happend in our 2006 honda pilot. We thought we had bottomed out. It turns out that the rear subframe, suspension, and drive train had fallen out of the rear crossmember. This is due to premature rust and inadequate metal used in the rear subframe. The rear subframe and suspension is only being held in with 2 more rusty bolts. This vehicle is not rusty anywhere else and is in excellent condition. It does have 165,000 miles on it. The vehicle is no longer safe to drive .