Hey, I've stumbled across maybe the ultimate countertop material for an Airstream. Check it out:
http://www.renewedmaterials.com/alkemi.html
This stuff is a resin with aluminum shavings embedded in it! Is that cool or what? You can get it in two forms: one has the shavings visible below the surface, and the other has been sanded down to expose the edges of the shavings.
Bob in Nashville