I have had so many E body cars with Rock on them. Some had Rock with a star drawn on it. Rock Star I get it. I think he played in a band and worked on the line and did it as a joke just before the rear qtr. Interior panels were installed or he did put them on and signed it just before he put them on. If a supervisor or foreman seen that it would not be good for Rock. It seems he signed cool cars. I had a Real 1970 Challenger R/T Ragtop 383 Loaded Panther Pink Ragtop now in Minn. He signed that car all over. When I was 16 years old I worked for a in ground pool co in 1975. I was in charge of putting all the pool parts in boxes to go to the installers. I would right funny stuff on the boxes with the owners name. Well one day an owner seen it and came unglued. That was the end of my Rock Star signings LOL. I did not get fired but was reamed a new one. My foreman thought it was funny. The owner of the co. did not.