https://www.youtube.com/watch?v=6WTYZboDXYQ
His book should be easy to find at retailers or cough other ebook sites.
Critical points:
1. The police are almost never trying to railroad anyone, but mistaken evidence, mistaken witnesses, or unfortunate consequences of telling the police things can make you look guilty.
2. You have no idea what the police are investigating. They can and will lie to you about this. They can and will lie to you about anything they want. See point 4.
3. There are tons of laws, especially federal laws, that are BS, and you're playing with fire thinking you can answer questions about what the investigators claim they're investigating without implicating yourself in some other crime.
4. Interrogators are trained to put an enormous amount of psychological pressure on you to help them, even if you realistically can't help, so you'll end up talking about anything and everything until (hopefully) the police realize you're actually not a good suspect, or until you've gotten tripped up and either admitted guilt or said something that makes you look guilty even if you're not.
5. Simply asserting the 5th, your right to remain silent, might now be able to be used against you if you don't do it perfectly and the cops/prosecutors think you're guilty and are willing to twist your invocation of the 5th against you.
6. Asserting the 5th isn't likely to stop interrogations immediately. Asking for a lawyer probably will.
7. Talking through a lawyer shields what you say from being used against you. Prof. Duane doesn't make this point explicitly in his talks, but Randy Barnett does in the second half of the above cato book talk.
8. If cops say they're going to arrest you, remember they're only arresting you if they have probable cause (or worse, they already have an arrest warrant). You need a virtually unassailable alibi that can be immediately verified (and hope the cop will verify it immediately) in order to be likely to talk your way out of being arrested. That almost never happens. A witness who will vouch for you is not the greatest alibi; cops may not believe them, especially if the witness is your friend or family, or the witness may not tell the cops what you hoped. If there's any doubt about your alibi, the cops are going to arrest you and book you anyway and sort things out later. And meanwhile what did you tell them for the 5 minutes or 30 minutes you were trying to talk your way out of it?
And as Prof Duane notes, the advice he gives and that's in his book doesn't really apply to routine traffic stops. However, if it escalates to "can I search your car" or "step out of the vehicle"...