Yah, if a bag of any size is opened and “fluffed” (e.g., poked, dropped, etc) the powder expelled, while nearly invisible, is sufficient to kill in minutes. Coppers now carry shots intended to safe twits from heroin OD.
Just to do their bloody jobs.
I suspect the only quick, safe way to deal with this sort of release in a car is to just fill the car with firefighting foam and bury it.
Absolutely correct, but then you've destroyed the evidence. This is what puts the blue line on the razor's edge...