Yep. They are usually Sheriff Office rides used to combat street racing. Regular PD's don't have the budget/ infastructure to buy and maintain these cars. There are several new laws in AZ also to combat street racing. The wildest is "Exibition of Speed". This is automatic court and possible lic suspension. Can't really fight it. You can be "laying a patch" and they issue this citation. It is a form of drag racing. They say you are racing yourself. Almost impossible to fight and win. Just a heads up.