A kill-switch breathalyzer was a piece of technology in 2015.
Judging by the name, it can be safely assumed that this was a combination futuristic safety mechanism/anti-drunk flying device, which could automatically shut down the engine, flying systems etc. of a flying car if the pilot was under the influence of alcohol — thus preventing the dangerous act of drunk flying.
According to the Newsline column on the front page of the October 22, 2015 issue of USA Today, Katie Pearson, a new lobbyist hired by the organization Mothers Against Drunk Flying, was to lead a campaign to install kill-switch breathalyzers in flying cars.
- Back to the Future Part II (in newspaper column)
- Special "front page wrap" for real life October 22, 2015 issue of USA Today (see 'External links' below)