It won't take much imagination to see how thiks can be used to kill the occupants. So can you.
Tesla tests it's 'bioweapon defense mode': Elon Musk's car firm show off system that can protect passengers from 'extreme pollution'
http://www.dailymail.co.uk/sciencetech/article-3570139/Tesla-tests-s-bioweapon-defense-mode-Elon-Musk-s-car-firm-protect-passengers-extreme-pollution.html