While most commercial truck drivers are safe professionals, too many drive recklessly or drive under the influence of amphetamines or other so - called «uppers.»
In short, a driver under the influence of amphetamines is overly impulsive and is much more prone to making a decision which could injure themselves or other motorists.
It's true that the series is a smorgasbord of acting opportunities — especially in its first installment, «Bad News,» in which Patrick is under the influenceof heroin, cocaine, quaaludes, amphetamines, and alcohol, alternately and all together.