Impersonating a police car is, unsurprisingly, already a crime:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Police_impersonation" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Police_impersonation</a><p>States have similar laws for other emergency vehicles. E.g.: <a href="http:&#x2F;&#x2F;www.azleg.state.az.us&#x2F;FormatDocument.asp?inDoc=&#x2F;ars&#x2F;28&#x2F;00947.htm&amp;Title=28&amp;DocType=ARS" rel="nofollow">http:&#x2F;&#x2F;www.azleg.state.az.us&#x2F;FormatDocument.asp?inDoc=&#x2F;ars&#x2F;2...</a>