Quizno's is now serving a Prime Rib Sandwich on their trademark toasted bun. It's said to be "thinly-sliced prime rib with melted mozzarella cheese, sauteed onions and mild peppercorn sauce." Quizno's sandwich is shown on the left with the "double portion of meat" option.
I've not had Quizno's prime rib sandwich, but I did have a prime sandwich not long ago at Mustache Pete's in Cambria, CA. (Both the restaurant and the town are definitely worth a visit by the way.) And I can tell you that there is no way that Quizno's comes close to Mustache Pete's (pictured at right). What an incredible sandwich... and none of this "thinly-sliced" pieces stuff; Pete's is a slab-thick slice of heaven!