This is intended. If you had unlimited air from the start then Astrape would be very easy. I'm going to have the electrical discharge destroy your rover's pressure regulator to stop people thinking it's an accident.
Well that wouldn't make a whole lot of sense.
There is automated farm equipment, that is working when we visit Astrape. Why does the discharge only affect our vehicle, and break stuff?
...well it doesn't break EVERYTHING in the rover either...
