"Anything that alters your state of mind or dims your concentration is a big no no for drivers. "
In my teens and twenties me and my mates regularly smoked bush weed. It was quite obvious when anybody who was stoned was driving. There was intense concentration, 5 to 10 MPH under the speed limit and the car was kept as steady as a rock. As a matter of fact, looking at the stoned driver's face would send us into gales of laughter. He always looked like he was deciding on the red wire or the blue wire to avoid an explosion.
Thinking back, it really is weird because it's nearly impossible to read and comprehend what I'm reading while under under the influence but doing something physical like driving definitely increased concentration to a great degree.
I can't speak for potency but as I said, we only had bush weed.
