Motor vehicle sales tax rates differ greatly inside a United Nations. Car tax by state often varies within counties and urban centers. If you are moving to another state, calculating car tax prior to moving possibly be useful in determining where and when to own. However, if you are trying stay clear of the car tax away from your home address, then go ahead and buying a new home to park your car in because unless your very own a house or inhabit the state in question you risk tax evasion. Ca...