It seems that innovative electric automaker Tesla has discovered something we’ve known all along: improving indoor air quality is vital.

It recently made a splash in the media, revealing it had provided a feature in its all-electric SUV called Tesla X. The feature: something called Bioweapon Defense Mode, a cheeky name for a powerful air filtration system.

Watch air pollution levels inside Model X drastically drop when we turn on Bioweapon Defense Mode in Beijing pic.twitter.com/HLjyvj3H2C

— Tesla (@Tesla) May 3, 2016

According to the car maker:

“Inspired by the air filtration systems used in hospitals, clean rooms, and the space industry, we developed a HEPA filtration system capable of stripping the outside air of pollen, bacteria, and pollution before they enter the cabin and systematically scrubbing the air inside the cabin to eliminate any trace of these particles. The end result is a filtration system hundreds of times more efficient than standard automotive filters, capable of providing the driver and her passengers with the best possible cabin air quality no matter what is happening in the environment around them.”

The filtration system was tested in a number of locales, ranging from freeways to marshes and cow pastures.

As part of a media stunt, the carmaker placed an SUV with open car doors in a chamber, which was filled with extreme levels of air pollution. The doors of the SUV were then closed, and the air filtration system was activated. Particulate readings were obtained prior to sealing the doors and after the filtration was turned on, showing the complete removal of pollutants once the system was up and running. That makes for a pleasant indoor environment, and eliminates outside pollutants, like car exhaust, from creeping in.But here’s where hyperbole kicks in. In a statement, Tesla says the HEPA air filtration system is so advanced it would allow someone to “survive a military grade bio attack by sitting in your car.” How true is that claim? It’s anyone’s guess, since the test didn’t include a cloud of Anthrax or Ricin.

The Bioweapon Defenses Mode will be a standard feature in upcoming Tesla Models.

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