You could get Shire plates, or Embassy of Heaven plates, but there's another way: just be a kazillionaire driving an expensive car in a city where you're regularly given a police escort.
http://www.wired.com/epicenter/2010/08/the-mystery-of-steve-jobs-plateless-benz/all/1 (http://www.wired.com/epicenter/2010/08/the-mystery-of-steve-jobs-plateless-benz/all/1)