What is the test for an individual to be found guilty of attempted murder by reason of intent?

intends to kill A and, in order to ensure A's death, drives by a group consisting of A, B, and C, and attacks the group with automatic weapon fire or an explosive device devastating enough to kill everyone in the group. The defendant has intentionally created a "kill zone" to ensure the death of his primary victim, and the trier of fact may reasonably infer from the method employed an intent to kill others concurrent with the intent to kill the primary victim. When the defendant escalated his mode of attack from a single bullet aimed at A's head to a hail of bullets or an explosive device, the factfinder can infer that, whether or not the defendant succeeded in killing A, the defendant concurrently intended to kill everyone in A's immediate vicinity to ensure A's death. The defendant's intent need not be transferred from A to B, because although the defendant's goal was to kill A, his intent to kill B was also direct; it was concurrent with his intent to kill A. Where the means employed to commit the crime against a primary victim create a zone of harm around that victim, the factfinder can reasonably infer that the defendant intended that harm to all who are in the anticipated zone.'" (Id. at pp. 329-330; see People v. Vang (2001) 87 Cal.App.4th 554, 563-564.)