Some speakers shorten the name "double u" into "dub-u" or just "dub"; for example, University of Wisconsin, University of Washington, University of Wyoming, University of Waterloo, University of the Western Cape and University of Western Australia are all known colloquially as "U Dub", and the automobile company Volkswagen, abbreviated "VW", is sometimes pronounced "V-Dub". The fact that many website URLs require a "www." prefix has been influential in promoting these shortened pronunciations, as many speakers find the phrase "double-u double-u double-u" inconveniently long.