Sure, and they will have iPod integration in all of their models by the end of 2007:
http://www.leftlanenews.com/apple-an...-gm-mazda.html
My wife and I both have H2's. I have added the Pioneer AVIC D3 with ipod integration and bluetooth. When my wife's lease is up in May '08, she will be getting a non-GM car that has bluetooth and ipod integration from the factory. Crazy that a company like GM will lose a good customer because they can't get this right!