I think it's storage in the states. From what I've heard the storage company will start the car up, rotate tires and stuff.
I don't know if I will be coming back to the UK afterwards but I'm going to try. I'll be in Japan for 3 years. I'll have one heck of a heavy foot when I get back in the z4.
Sorry for not being on more, I've been busy (read keeping SWMBO happy by not spending all hours on the computer).
I've heard everyone say that I will love it in Okinawa. After doing some research, yeah I think I will love it!