Here’s how cops get consent:
“Now I can get search warrant. We’ll both be sitting here an extra hour and be in the same boat. And five other officers and a police dog will rip your car up. You consenting or not?”
Had a co stop me once. Told him I was calling my lawyer as we were speaking. He said no lawyer was going to answer a phone call late at night. He was wrong. My attorney answered by the third ring; and I was on my way a minute or two later.
“Now I can get search warrant. Well both be sitting here an extra hour and be in the same boat. And five other officers and a police dog will rip your car up. You consenting or not?”
My response to a cop that said nearly exactly that: “So, you are threatening violence in an attempt to extort a search? Seems any evidence you find under such a threat would render that evidence useless in court. An attorney will be here in 20 minutes. You can explain your extortion to him and to the DA in the criminal complaint.”
He’s not a cop anymore.