Pretty sure they did not come with them out of the factory. Any cars you see with them will probably be aftermarket ones fitted. I am sure eBay would have some if you really need them.
Most mechanics recommend these days not to bother as any self respecting thief wanting your wheels will soon have them anyway…
I had a new Gransport delivered in 2006 and it did not come with locking nuts Also the dealer advised NOT to put them on –Reason -As Graham pointed out above