You run the risk of getting a DUII, which can cost thousands of dollars when all is said and done, result in the loss of your driving privilege, and potentially lead to forced rehab. Even driving with marijuana in your car can be risky, especially in states with ultra harsh marijuana laws. However, all marijuana veterans have had to do it at one point or another. Below is a video that I came across on YouTube that was made by a former police officer. In the video, he provides tips on where to (and where not to) store marijuana in a vehicle so that it reduces the chances of an officer finding it.