That would be entertaining if they did, although I'm not so sure how competitive the Grenadier would be, there's some speedy competition for that event.
What I'm really hoping is that they start sponsoring extreme challenges akin to the Camel Trophy etc. Sir Jim loves getting out there and doing stuff so and I can't imagine a better way to showcase the 'new tough' off roader to the world.
As we've discussed before, wet grass and a gravel road don't really showcase the off-road chops of a vehicle.