I just found this site, for an onstar type system that is sold at Canadian Honda dealers. It does not seem to have the voice stuff, or the auto alert for airbags, but has some other neat features.
Perhaps next month when teh Ridgeline is sold in Canada, one of the Canadians on here will be able to get more info.
Oh as for cost, the article that mentioned it talked about $1000.00 installed, and $100.00 a year for service, and that was in Canadian so about 800.00, and 80 per year down here.
http://www.airiq.com/airiqnewweb2/portal.cfm?chapterID=23