Kava (Piper methysticum) is a traditional and culturally significant Pacific Island beverage that produces a soporific relaxant effect. Kava’s psychopharmacological action is similar to the anti-anxiety drug Benzodiazepine. Traditional users often consume the kava drink at volumes as much as 30 times greater than pharmacologically recommended doses. Prompted by concerns regarding driver impairment post kava drinking, a study was undertaken replicating traditional kava sessions in terms of duration and kava consumption, to investigate the effects of kava on driving capability.