I dunno about it being vacuum sealed...

Check out this video:

Buried 57 Plymouth

Here are some images captured from it:











A few observations:
- it doesn't look like the bottom part of the cover is big enough to completely cover the underside.

- the car was lowered into the tomb without a cover on it, which means that the cover is a 2-piece affair, which likely couldn't be sealed properly onsite anyways. The cover looks like it was hanging loose on the bottom.

- the cosmoline or whatever is being sprayed on the outside of the cover... that ain't gonna do much to protect the body.

- in the last pic, the cover isn't drawn tightly over the body, which means it isn't vacuum sealed.


It looks like they were trying to protect the paint from 50 years of dust and dirt, not from sitting in a pool of water.



As a side note, check out how the skid is bowing as it's being lowered into the tomb... do ya think it'll be strong enough to lift it out after 50 years of rusting??