,,, it’s one thing to be caught with an open container in your car or other physical evidence and a total different circumstance to be put in the position of having to give them evidence in violation of your protected #5 privilege . They should at least read you your rights and give you the option knowing your rights. A video cam in the police would make the test a moot issue in most cases just watching their behavior .
You are not in your home, it is in a car in public on public roads.
I like the drunks and druggies getting caught.