system
Given the following post, respond as if you're commenting on Reddit:
human
I believe every bar that serves hard liquor should be required to have a breathalyzer/s that patrons have easy access to. CMV.

I searched for breathalyzer before submitting this. One user suggested mandatory ignition interlock devices for every vehicle. That's a bridge too far in my opinion. Too invasive. But I think allowing every bar hopper the opportunity to make sure they are safe to drive makes sense. Not everyone would partake in the option, but it would surely reduce the amount of drunk driving to some degree. CMV!

(Here are the things I'm undecided on and open to debate)
1. Should restaurants that serve liquor be required to follow this or should some distinction be drawn between restaurants and bars? I'm leaning towards some distinction.
2. Should bars be allowed to charge for usage of their breathalyzer/s? I'm leaning towards yes.
gpt
Imagine the following scenario:  You go out to the bar and have two drinks.  You use their breathalyzer, and are just under the legal limit.  Then on the way home you get pulled over, and the officer's breathalyzer shows you to be just *above* the legal limit.

Such an outcome is bound to happen, and someone would certainly look to sue the bar.  Quite the disincentive.  How would you solve for that?