Just sayin ... Not all of us have Grigg's uncanny ability to spot the wheels he's looking for, mixed among thousands of nearly identical (appearing) wheels in a mound, covered with weeds in a forgotten junkyard from 1000 meters... I've seen him do it in person and all I can say is that 300 years ago, he would have been burned at the stake or dunked in a pond ...
(I exaggerate for humor -- Grigg has spent a LOT of time and effort to research this stuff and prepares very well for each time he hits the fields and junkyards, so it shouldn't be surprising that he can spot exactly what he's looking for).
