I have been watching a number of "cops arrest drunk driver" videos lately. In every case, they don't even mention that "breathalizer" or whatever they called it, but instead go into these elaborate tests that take forever, where they make the suspect walk in a line and follow their finger with their eyes and stuff like that.
Is there any reason that they do this now? There probably is. Was the "breathalizer" found to be inaccurate or something? Do they really not have a simpler and quicker way to check if somebody is drunk/impaired in the year 2021?