On this week's episode of Head 2 Head, certified wagon-freak Jonny Lieberman pits two of the very coolest station wagons in the world against each other. More than just cool, these are also two of the rarest wagons on earth. In fact, the E63 AMG Wagon is the rarest car Mercedes sells in the U.S. It's special order only through the dealer — it's not even on their website. Of course, the Icon Derelict is its own form of rare, being one of one. The Derelict started life out back in 1952 as a Chrysler Town & Country Custom Wagon, but things have changed. As for the E63 Wagon, we learned at Best Driver's Car that the stealthy Mercedes is quicker than several supercars. But does it have what it takes to defeat Icon's icon? Watch and find out!