Staff will be travelling around the country from April 11 in a pair of Chevrolets and stopping at various locations from Bournemouth to Edinburgh.
They will be holding car pool karaoke sessions featuring US West Coast classics once parked up, with members of the public able to win a number of prizes from a holiday for two to California to £2,000.
Kathryn Robertson, Air New Zealand general manager, UK/Europe, said: “We wanted to turn the idea of a sales blitz on its head by hosting an LA-inspired road trip to spread the word amongst the trade about our daily London to Los Angeles flight.