Drunken-Driving Warning Systems Would Be Required for New Cars Under U.S. Bill

Wtf this is insane. Why would anyone want this. As someone who does not drive drunk this system still threatens to leave you stranded if it malfunctions or if you are just tired or work night shift.

<a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=29183613" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=29183613</a>

The classic car market keeps looking brighter.

How would you build this?