It’s hard to conjure a more perfect example of the dual nature on contemporary industry and technology, the boon and the bane, then Tesla’s reason for being confident about the Chinese market. The head-spinning transformation of that state has lifted millions from poverty–and delivered to them the world’s worst air pollution and highest cancer rates. Elon Musk’s EVs promise to filter air inside the vehicle so that it’s 800 times cleaner than Beijing’s oxygen. Just make sure you’re door is not ajar.

From CNBC:

If you’ve ever taken a deep breath in Beijing, you’ll understand why Tesla is so excited about “bioweapon defense mode.”

Given China’s well-documented problems with air quality, Tesla is hoping the cabin-filtering feature will be a major selling point as it expands sales of its electric cars there.

“One of the most interesting features for the Chinese market is the bioweapon defense mode,” said Jon McNeill, head of global sales and service for Tesla, in an interview with Chinese broadcaster CCTV that was posted on Twitter Wednesday.

“It creates air that’s 800 times cleaner than the outside air,” he added.•