Wildlife Spotting

Seen crossing the highway somewhere between Augathella and Tambo in central Queensland. I was driving merrily along, when my husband said, "You just ran over a bunch of giant fluffy caterpillars." I said, "You are kidding me!" We went back to have a look, and there they were, crossing the road in a bunch... except for the ones I had squashed. : ( The last two shots show the location - we were in the middle of flat, open, grassy fields with barely a tree or bush in sight. I have no idea what they might be.