I found this web site that has a lot of information about federal and individual state hybrid incentives. http://go.ucsusa.org/hybridcenter/incentives.cfm#AZ
I looked at this page before and none of the stuff for my state was true For example it states that House Bill 5263 is Sales and Use Tax Exemption Bill, but when I look up that bill on the general assembly page Bill 5263 is An Act Relating to Towns and Cities - Benefits for Fire Fighters