In what circumstances will the police be able to search a vehicle without a search warrant?

In this case the officers did not rely on the automobile exception or upon any other stated exigency to justify the search and seizure. The officers relied upon defendant's consent. A voluntary consent to search creates a separate and independent exception to the warrant requirement and justifies a warrantless search of all areas covered by the consent over which defendant had authority. (See People v. Cruz (1964) 61 Cal.2d 861, 40 Cal.Rptr. 841, 395 P.2d 889.)