Keep it simple... put any weed and/or paraphinalia in the trunk for whatever transit. I am assuming from dealer to your home *ONLY*. Keep your vehicle clean, serviced, and in good repair. Keep the registration and insurance up to date, and *ALWAYS* wear your seat belt. Don't be out running around at 2am...keep your transit time during normal hours.. like from around 7am and be off the road by around 9pm. Drive normally, don't hot rod around, but OTOH don't drive exactly the speed limit, just go with the flow of traffic.

IOW....don't draw attention to yourself and put yourself in a position where somebody has to *DO* something about it. Above all, NEVER DRIVE WHILE UNDER THE INFLUENCE!!