Apparently this just came out today: http://www.buddytv.com/articles/supernatural/buddytv-at-the-set-of-supernat-22611.aspx (No real spoilers except for the title of an ep; the direct quote is "Jared and Jensen live together and carpool to work every day. They like to rib each other about who is lazier than whom in the morning, and it's very cute."