"Acute cannabis consumption nearly doubles the risk of a collision resulting in serious injury or death; this increase was most evident for studies of high quality, case-control studies, and studies of fatal collisions" - https://www.bmj.com/content/344/bmj.e536
I don't hate weed. Quite the contrary! But the whole point of a smoke is to put you in a different place and that place is not conducive to the safety of those around you while steering two tons of metal at 70MPH. I'll take us off on a different and probably unpopular tangent - if you say that marijuana makes absolutely no difference to your baseline judgement, reflexes, focus, etc... then you might be hitting the pipe a bit too often (i.e., massive tolerance and habituation) and it's maybe time to consider scaling back.
I don't hate weed. Quite the contrary! But the whole point of a smoke is to put you in a different place and that place is not conducive to the safety of those around you while steering two tons of metal at 70MPH. I'll take us off on a different and probably unpopular tangent - if you say that marijuana makes absolutely no difference to your baseline judgement, reflexes, focus, etc... then you might be hitting the pipe a bit too often (i.e., massive tolerance and habituation) and it's maybe time to consider scaling back.