While the Panamera has plenty of room in the boot, the shooting brake idea would perhaps be more about looks than actual carrying ability.
In a separate report at GTSpirit, picking up the ball from Britain's AutoExpress, it has been suggested that McLaren is considering an assault on the Ferrari FF with a new MP4-12C spin-off.
Running the same mechanicals as its coupe and spider brethren, the load-lugging McLaren could present a few engineering challenges - given that the engine is where seats and luggage would sit in a shooting brake.
Some reports reckon that the MP4-12C shooting brake could debut as early as 2013 - a more than slightly ambitious schedule, considering the lack of usual evidence: spy photos, patent leaks and solid insider information.
As for the question of what exactly a Shooting Brake is, check out TMR Managing Editor Tim O'Brien's piece on the topic.