Holden Caprice WL at Orchard Road Singapore

Spotted this Malaysia registered Holden Caprice WL at Orchard Road Singapore, I being attracted by the unique plate number, I tried to snap it immediately when I notice it, however, I just able to snap the rear view. This Holden Caprice WL belongs to the Johor Royal Family. The plate number RZ is for Raja Zarith Sofiah, the consort of the Sultan Johor, Tunku Ibrahim Ismail.