This is one was kinda strange... not because of the image on the car... but the car itself... because a VW Polo in Japan?!
AS THE OWNER OF MY OWN SET OF THOSE CHEESY CUSTOM LICENSE PLATE NUMBERS >:( >:( >:( >:( >:( , I can tell you that most states allow you to customize your license plates for an additional cost over the cost of yearly registration (mine are about another $44 per year to have and keep). I would suggest you enquire with your provincial motor vehicle registrar.