Just a bit of trivia about the billboard stripe.
As you know, the 1970 'Cuda had a "hockey stripe" on its rear quarter panel. In 1971 the Plymouth designers were charged with coming up with something bold and different. After having several designs rejected as being too bland, an angry designer came up with the billboard stripe to spite his boss, knowing that it was too outrageous to be approved (i.e., "you want bold...I'll give you bold"). To his surprise, his boss loved it and the rest is history.
As a side note, everyone today really digs this stripe but that was not always the case in 1971. Magazines and car buffs either loved it or hated it- there were no in-between feelings.
