How have the courts interpreted instructions in a motor vehicle accident case?

The court went on to say that it was unable to account for the verdict except on the theory the jury misunderstood the instructions. The court concluded that failure to give the instructions requested by the defendant was prejudicial. (People v. Mayo, supra, 194 Cal.App.2d at p. 537, 15 Cal.Rptr. 366.) One of the instructions requested by the defendant was "[I]f a defendant's mental condition at the scene of the collision is such that he is unable to know what is going on or what has occurred, he cannot be found guilty." (Id. at p. 536, 15 Cal.Rptr. 366.)