Is there probable cause to search a vehicle for methamphetamine?

Defendant argues probable cause to search his vehicle did not exist because the information concerning the locality of the methamphetamine came from an unreliable and untested informant whose statement was not corroborated before the search occurred. Defendant relies on People v. Lissauer (1985) 169 Cal.App.3d 413 to support his contention. In Lissauer, an untested informant provided information concerning the defendant's involvement in drug sales. (Id. at p. 417.) Law enforcement officers set up surveillance on the defendant's house, followed his car, stopped and searched his car, and found contraband in the backseat. (Id. at p 418.) The defendant pled guilty to possession of marijuana after the trial court denied his motion to suppress the evidence found in his vehicle during the warrantless search. (Id. at p. 416.)