I've gotten my Aviator VERY dirty before. I was grinning the whole time flying through a muddy dirt road while it was pouring rain. Mud was blasting up onto the windshield. I think there might be some nice red dirt still on her somewhere from that night. AWD V8 is so sweet. I wish I had pics of that, but I'm sure I'll get into that situation again.
If you don't tow or go mudding once in a while, you might as well get a mini-van and go home.