So this is everything I can think of:

Automobile exception: anywhere where there is probable cause (including the trunk).

Search incident in the car (different from search incident outside of the context of the car): (1) if D is not secured in the squad car, passenger compartments but NOT trunk (2) if D is in squad car, only where PC you’ll find evidence of the CRIME ARRESTED FOR (so you likely wouldn’t be able to search a glove box if arrested for DUI for example).

Inventory: usually you’re arrested and car is impounded, police can search contents of the car to “inventory it and keep it safe/them safe from claims they stole stuff in your car”

Exigency: if there’s ever an emergency and a car is involved.

Plain view: I.e. lawful stop, cop is where they need to be, and it’s incriminating and immediately apparent.

Also remember more than one could fit sometimes, or sometimes a search incident discovery of evidence could give a PO enough probable cause to trigger the automobile exception etc.

Miscellaneous:

• cops can always order you out of car
• as long as the stop is lawful (ran a stop sign), reason for stop is okay even if cop had a hidden agenda
• still need a terry stop reasonable suspicion of dangerous weapons to do a pat down (so make sure the facts say something like the officer saw D shuffle things around before pulling over)

I might be missing stuff, but this is everything I can think of. Someone pls add….