If there are two signatures on the car, it makes me wonder if "Rock" wasn't just some guy crayoning his name on a car, but a QUALITY CONTROL INSPECTOR. Quite possibly that A66 (or whatever car that was with TWO signatures) was a car that didn't pass a QC inspection somewhere after Rock looked at it first, and possibly, he needed to reinspect a little father down the line...

Later
KFD