I believe some of the "trials" are being paid for by automotive partners. Regardless, even if it is a free trial to the customer, the satellite provider is still paying for it. It's not free to give away free service, there is still a cost associated with it. The country providers have arrangements with the automotive companies in their respective countries, so it's them who are paying for it. I can't see Sirius US giving you free service that Sirius Canada should be footing the bill for, or vice versa. Same with XM and XM Canada.