Spotted by someone in Colorado.

"I am at a conference at the the Keystone Inn right now in Keystone, Colorado... a ski resort near Breckenridge. There are about 6 Panameras hidden in back parking lot, and a handful of Germans with laptops who aren't too interested in striking up a conversation. They've been here for a few days and the cars are modestly disguised with tarps, plastic, reflective tape, and big plastic crates over the rear spoiler, although there's not much that can truly hide a Porsche the size of an Avalon. The interior was also well disguised with vinyl covering the dash, doors, and even the steering wheel. Made my conference a little more interesting."