[Cob] those pics of the beautiful tree-sculpted wall...

[CM Hellwinckel]

There's a great description in Ianto's Cob book of a guy that mixed cob
in the street with a bobcat and made 20 tons in about 10 hours and kept
it wet and useable until all the cob was in place.  Maybe you can follow
up by getting his name and seeing how well the house is standing the
test of time??  He did have to rent a power sprayer afterwards to clean
the street.  But this is a good example of using already asphalted land
to mix cob with heavy machinery (without compacting your land).