I found this story just amazing. It's funny how a 1957 Plymouth buried in a time capsule for just 50 years can turn to dust, yet a car like this one can survive in a barn in such pristine condition. I guess they should have put the Plymouth in a barn instead of underground. :)
You might find this link interesting.
http://telstarlogistics.typepad.com/telstarlogistics/2007/06/well_now_its_of.html