In the car brochure about this car it says it has 30GB hard drive is that only for journeys in USA because mine doesn't have one.

 

Welcome to the forum and congrats on the new DJ-enjoy.
The difference in marketing areas of world distibution
of the DJ is confusing at best so I maybe completely
wrong but the 30gb radios aren't in the DJ here and
I believe they are referring to the pre 2011 use of
the MYGIG radio in '09-'10 DJs.