Will ‘What Happens in Vegas’ stay in Vegas?

The upcoming comedy focuses on strangers who marry after a night of debauchery — and squabble over the spoils when one of them wins a huge slot jackpot with the other’s quarter. (After which they inevitably fall in love.)

Cameron Diaz and Ashton Kutcher are reportedly in talks to play the lucky pair; “Entourage’s” Julian Farino is set to direct, from a script by Dana Fox (“The Wedding Date”).

No word yet, however, on whether “What Happens in Vegas …” will actually happen in Vegas — or will shoot most of its footage somewhere else and pretend it’s Neon Nirvana, following the footsteps of such productions as CBS’ “CSI: Crime Scene Investigation,” NBC’s “Las Vegas” and the upcoming big-screen sequel “Ocean’s Thirteen.”

Extras, extras: The big-screen drama “The Return,” about three Iraq war veterans on a cross-country odyssey, isn’t scheduled to shoot here for about a month.

But On Location Casting already has launched a search for union and nonunion extras. (Chicago, St. Louis and Denver are the other scheduled stops for the drama from “Illusionist” director Neil Burger.)

Among the types needed for the June 19-28 shoot: police officers, flight attendants, airline passengers, cocktail servers, casino patrons (from high rollers to penny-slot types), doctors and nurses (especially those familiar with medical procedures), attractive party gals and guys, military types (with haircuts to match), wounded soldiers — and stand-ins for stars Rachel McAdams, Tim Robbins and Michael Peña.

If you’re interested, go to www.onlocationcasting.net, fill out the talent application and include a recent photo with your e-mailed form. (Casting director Tina Kerr advises potential extras to disregard instructions on the Internet site to activate an Agency Pro account; there’s no fee to register for this project.)

Catch the Airwave: Watching Las Vegas’ pulsating night lights from your car window is a time-honored ritual.

Honda puts a new spin on the tradition for Japanese TV audiences this week with a 30-second commercial, scheduled to shoot Tuesday and Wednesday on the Strip and downtown, along Main Street and Casino Center Drive.

The advertisement spotlights the Airwave (not available in the United States), a compact station wagon version of the bite-sized Honda Fit equipped with a “skyroof” that stretches from the windshield to the back window.

That glassed-in roof provides an ideal vantage point for whatever the driver’s gazing at (besides the road, that is), in this case, Las Vegas’ “spectacular lights,” explains producer manager Roger Leonidas of Los Angeles-based Day O Productions.

Carol Cling’s Shooting Stars column appears Mondays. Contact her at 383-0272 or e-mail her at ccling@reviewjournal.com.