I did NOT expect it to have a different wheelbase to the G30, this will mean it should have more leg room than the G30.
8 Coupe = 2822mm
5 Sedan = 2975mm
8 GC = 3023mm
I think this means it designed to be quite a bit more luxurious for 4 people than the 5 is (combined with the centre console of course)
I'm even more surprised that the rear arches are 30mm wider than the Coupe and they have increased the track by 30mm. I guess this means it will be easier to fit wider rear tyres on the GC as well
