What is the test for a charge of recklessly causing grievous bodily injury in a motor vehicle accident?

bodily injury suffered by the victim; or 2) that at the time the defendant personally applied unlawful physical force to the victim, the defendant knew that other persons, as part of the same incident, had applied, were applying, or would apply unlawful physical force upon the victim and the defendant then knew, or reasonably should have known, that the cumulative effect of all the unlawful physical force would result in [great bodily injury] to the victim.' [Citation.]" (People v. Banuelos (2003) 106 Cal.App.4th 1332, 1337, italics and underscoring added.)