Do you mean garages at home, or public parking garages?
I assume you mean at home, in which case you should know that most houses dont have them at all.
However, as youre on a corporate relocation, (I'm reading 'big bucks' here...) you will probably be able to get anything you want..
If i were you, i would sell or leave the Hummer at home... dont bring it. Most people wont be impressed... they'll think you're an idiot. Those vehicles are just too big for the narrow roads here. I used to have a Nissan Patrol, and remember a few sticky situations where i didnt think i was going to fit it between bollards, etc.
And someone mentioned the cost of fuel... I'm sure our petrol costs AT LEAST double, if not more, than what it costs in the States.
I dont think it would be worthwhile to bring the rig.