When you are stopped and arrested for a DUI, do not consent to a search of your motor vehicle. There is new precedence that determined that the search of a motor vehicle incident to an arrest during an alcohol DUI arrest is unlawful.
For instance, if you are arrested on a DUI and put in a police vehicle and they subsequently found marijuana in your car, there would be a suppression issue in your case. As a Tacoma, WA based DUI lawyer, Cristine Beckwith has been successful at suppressing evidence that is subject to an unlawful DUI search.