Simple: You can't do anything if you buy the ire of most, if not all, residents and businesses in your jurisdiction. Everyone likes to go out and eat and drink

Simple: You can't do anything if you buy the ire of most, if not all, residents and businesses in your jurisdiction. Everyone likes to go out and eat and drink, and at least here in the US driving cars is just as much a way of life and thus a practical right as it is a legal privilege. Dining venues and residences generally are not in walking distance, and thus necessitates driving a car. Drunk driving laws exist to police the particularly egregious offenders who end up causing or could cause harm, but the police know that if they try enforcing those laws on everyone they will quickly lose support from the people they need to protect and end up unable to enforce any law. That's why police don't arrest restaurant goers and also why I suspect this mandate will immediately die once it becomes widely known.