I would be willing to bet that if Floyd was forced into the back of the squad car, he would have just died there. It was an OD.
He wasn't strung out high when the arrest took place, that can be confirmed by the video, so why do you say he would have OD'd in the back the police car ?
He was cognitively fluent during the arrest from the start.
Someone who is high on fentanyl doesn't act like that.
Making stuff up as it suits you doesn't present intellectual honesty.