This case presents question in prosecution on aggravated DUI charges as to whether trial court properly precluded defendant from presenting evidence that something other than her consumption of cannabis caused her to lose consciousness just prior to accident. Trial court found that such evidence was irrelevant, where govt. was not required to establish causal connection between consumption of drugs and instant accident once record established existence of any level of drugs in defendant’s system. However, Appellate Court, in reversing trial court, noted that: (1) trial court had also found that there was no evidence that defendant was impaired by drugs or alcohol at time of accident; and (2) defendant should have been given opportunity to present evidence that her low blood pressure, as Act of God, could have been sole proximate cause of accident.