I actually think a Dodge Magnum Hemi Wagon is about as close to concept as can be had new in the USA. Could easily have the rear doors eliminated, and the rear customized for shooting.
My neighbor has a RR Silver Cloud, and while it is magnificent to ride around in, it's just a little uncomfortable being stared at when you go for a drive. We Americans are so caught up in transportation, we forget the fun and freedom of driving.

Out there doing it best I can.