Stop in for a cup of coffee
Put rebar in the slab, weld the anchor to the rebar, pour the concrete, and finish to grade.
Gotta be a way to make a loop subsurface..
Or something like this. But maybe attach with carriage bolts dropped in epoxy and could drive over.
Put rebar in the slab, weld the anchor to the rebar, pour the concrete, and finish to grade.