NEW YORK (AP) - While Jay Leno is getting ready to pack up and leave "The Tonight Show," David Letterman plans on staying where he is, at least through 2010, when his contract runs out. He tells Rolling Stone the way he feels now, he'd like "to go beyond 2010, not much beyond." He says "you always like to be able to excuse yourself on your own terms." Letterman says "if the network is happy with that, great. If they wanna make a change in 2010," he's fine with that, too. Letterman adds, unless he's misunderstanding something, he doesn't know why, "after the job Jay has done for them," why NBC would let him go. He says he has to believe Leno "was not happy about it."