Following earlier items on the Land Cruiser 70 Series wagon and on forgetting to lock manual hubs, it occurred to me that this device has all but disappeared from new vehicles, replaced by various types of automatic locking arrangements. The only vehicles I can think of still offering manual front hub locks are the members of the Land Cruiser 70 family. And you could probably include the Nissan Patrol, whose hubs can be locked manually or automatically. Have I missed any?
About the hubs: Wikipedia has a good article on the subject here.