Automobile searches
Standing
"[A] defendant may challenge evidence found in a searched vehicle as the fruit of an unlawful detention, even if the defendant lacked a reasonable expectation of privacy in the searched vehicle." (Brewer v. Superior Court (2017) 16 Cal.App.4th 1019, 1024-1025.)
Warrantless probable cause searches
Limited Webster (1991) 54 Cal.3d 411-type search to search for ID allowed when defendant was driving recently and cannot produce license. Arturo D. still valid. (People v. Lopez 2016 (4 Cal.App.5th 814, 827, review granted Jan. 25, 2017.)
Search incident to arrest
Arizona v. Gant (2009) 556 U.S. 332. Where firearm is found on person of convicted felon, and person is arrested for such, probable cause for search of automobile for additional items. (People v. Osborne (2009) 175 Cal.App.4th 1052.) Analogized to drugs.
Search of cell phone for evidence of driving under the influence OK. (People v. Nottoli (2011) 199 Cal.App.4th 531.) I assume no longer good after Riley v. California.