For reasons I'm sure you can guess, I don't expect to go to Las Vegas — or really, anywhere — for quite a while. But I may now have a special new reason to travel there. Nothing has been officially announced but several sources are saying that the bevy of great restaurants in Caesars Palace will soon be joined by the first outside-New-York outlet of Peter Luger's Steakhouse. We shall be following this rumor with more than a little interest.