How stupid of your friend to smoke pot in the car. If you are driving and the car reeks of pot and the police find any remnants, even a seed, anything they can test, you could be found in possession of marijuana. You are the driver I doubt if your pot smoking friend will go to court and tell them that the pot was his. If you smoke it at all, it can stay in your blood for up to 30 days. If you are stopped and they find any remnants or smell the marijuana scent, you could be arrested for driving under the influence and if a blood test detects any amount of marijuana in your system, you could get convicted of driving under the influence of marijuana.
Answered on Apr 23rd, 2013 at 2:54 PM