It has pretty good filtration [1], and redundant fans. Some rocks aren't a problem. But, you can't be driving through LA.
[1] https://youtu.be/xkXvL8YCtIE?t=721
You can’t drive it anywhere that manhole covers might exist, lest you destroy the car and/or turn the manhole cover into a deadly projectile.
alt Hacker News
You can’t drive it anywhere that manhole covers might exist, lest you destroy the car and/or turn the manhole cover into a deadly projectile.