IANAL, but my understanding is that you can&#x27;t be detained (or rather a traffic stop cannot be extend) to wait for a drug dog [0]. Already you should have been able to leave.<p>Additionally, the &quot;no, you&#x27;re free to go&quot; bit sounds like an officer trying to find a loophole, since the standard for whether or not you&#x27;re being detained is if a reasonable person would assume they were free to go. Despite the officer telling you that you were free to go, I suspect most people in the middle of no where without a car would not assume they truly were.<p>Plus, calling your car &quot;evidence&quot; at that point is a bit... weird.<p>[0] <a href="http:&#x2F;&#x2F;www.supremecourt.gov&#x2F;opinions&#x2F;14pdf&#x2F;13-9972_p8k0.pdf" rel="nofollow">http:&#x2F;&#x2F;www.supremecourt.gov&#x2F;opinions&#x2F;14pdf&#x2F;13-9972_p8k0.pdf</a>