I once carpooled over the swizz border and the driver said he had a significant amount of weed in the trunk. However we should not worry as they never pulled him over. Of course they stop us and check our I'd. Luckily they weren't very thorough and let us go. Only for the car to break down after a few minutes.. As we barley managed to coast into the nearest rest stop it started raining. It took close to 2h for the tow truck to arrive, plenty of time for our driver to roll and smoke some. Then we were grated with the stale waiting area of the mechanic's shop where we were told they had no cars available. Ann hour later they find out how good his insurance is and suddenly find a posh suv for us too continue our trip. That is when I was told how to smoke in a rental without getting fined for it. All in all it took 4 to 5h longer than expected and for a portion of the drive I had a rather stoned driver. Though to his credit he rose to every challenge the journey threw at us with an extremely relaxed attitude.