http://www.lynchhummer.com has his own enclosed shipping tractor and trailer. It might be worth it to look at his dealership when buying.
Mid-States 800-759-0947
has shipped a lot of Hummers. If memory serves me correctly they are the company that ships the trucks (H1) from South Bend to the dealerships around the country. Of course they are not covered but if they just happen to be at a dealership you are buying from they could get your truck and return to your location on their return trip, or whatever.