Defendant was convicted of felony driving under the influence of intoxicants (DUII). At trial, defendant sought to introduce evidence that he suffered from a sleepwalking disorder and was “sleep driving” at the time he was stopped in his vehicle. Defendant argued he did not voluntarily drive his vehicle, an element of proof necessary to establish criminal liability for DUII. The trial court excluded defendant’s proffered evidence, concluding it was not relevant because DUII is a strict-liability offense. On appeal, the Court of Appeals agreed that DUII is a strict-liability offense and affirmed. After its review, the Supreme Court concluded that defendant’s proffered evidence was indeed relevant to the driving element of the DUII charge, and accordingly reversed.