Is it really an issue in reality though? I seem to recall reading that almost all cases of accidents where the driver tested positive for cannabis, there was a

Is it really an issue in reality though? I seem to recall reading that almost all cases of accidents where the driver tested positive for cannabis, there was another drug involved - usually alcohol. To be clear, I'm not saying it's OK to drive under the influence of any psychoactive drug - it's plainly not. But I worry that legalised cannabis is going to be demonised by people with something to sell, and about the motivations of the sellers.