I'm curious about medical marijuana and how the law views possession and/or being under the influence. Do folk who have it prescribed get a special 'stay out of jail' card they can flash at the cops? Also, is there some sort of legal undertaking that has to be signed about not driving, operating machinery, holding positions of responsibilty or influence etc.? How does it effect insurance policies? Where else, besides the US, can one be prescribed pot for medicinal purposes? It seems almost too good to be true and is perhaps why nanna states like Oz probably won't mainstream the practice in the near future. Comments anyone?