That's Monaro, Murano is Nissan's new soft-roader SUV..

If you're talking about Chevrolet Luminas from the Middle East, I believe they're actually Holden Commodores built in Australia for export and then rebadged. They also sell Holden Statesmans or Caprices as Chevy Caprices there, I think.
They've had the pink one, the Torana TT36; the Efijy, the latest retro one; and several years back the Monaro itself was a concept that Holden's guys worked on in their spare time. The design department is reasonably active, I suppose - and they've now exported some designers to Korea to help with GM Daewoo.