It’s not smart to try to use intoxicants when you have to operate heavy machinery, i saw this play out in a absolutely horrible sort of way at an old job, a guy was operating a forklift & it tipped over while he was inside. Instead of getting workers compensation & having all of his medical bills paid for, he was drug diagnosed & he diagnosed positive for tranquilizers & opiates! Because of the drugs in his system, he was cleared from any liability from the supplier… This is the type of mistake that could ruin your life because the injury made it impossible for him to find similar work, & he was given actually no workers compensation or insurance cash to address what happened to him. That’s why I have typically been sensitive about using any kind of intoxicating substances when I know I am going to be operating every machinery. That involves driving cars. I do not like using alcohol or cannabis behind the wheel of a car. It’s all so smart not to get behind the wheel of a car right after using either! On top of the danger, you can get in a lot of trouble as a medical marijuana patient if you are using cannabis in a car, but you can get your medical marijuana card revoked if you are caught doing this. That’s why I would not risk it even if there was no danger at all from using cannabis while driving. It’s a risky proposition every time you decide to roll the dice. You never know when you guess it pulled over for someone related reason.