It's only on the trunk portion -- really weird. Never seen a car's trunk do that.

It's a jagged line right down the middle of the trunk like SharkD described.

The line demarcates it like the 2nd linked picture you have. I think you'll probably have to take a look at it for me ... I may bring it by BMW of Fairfax and ask them how much to fix -- but, just wondering if I can fix it myself (90% of it) - if I can get it to look 90% better, I'll live with it.