But only XM and Sirius -- and National Public Radio , perhaps -- have the resources to produce a great range of creative , professionally produced programming : Bob Dylan 's explorations in music and storytelling on XM ; original radio dramas ; XM 's Artist Confidential series of sessions with big-name performers ; and specialized programs for truckers , gays , Latinos , NASCAR fans , Broadway lovers , opera buffs , movie-music mavens , presidential campaign addicts and on and on .