Here in Australia, there aren't any bullshit field sobriety tests - the breathalyzer just comes out and you get tested. If you blow over, you then wait 15 minutes if you produce a lower reading, before trying again. If you still blow over, you then go to the station to get a proper test done before the police can legally prove anything.
There are obviously freedom-based downsides to mandatory roadside testing, but if the alternative is the kind of shit in this story, then I'm happy with our system here. Never had an issue with it myself... unless we're talking roadside drug testing, which is flawed as fuck, and most of the time produces a positive result the day after, leading to a loss of license. We literally have 'road safety' billboards along our highways plastered with the tagline "get caught long after the high is gone."
Australia is so fucking behind the times in so many ways, it drives me insane.