Block before next wet cars how is demist best?

Really, when next wet air temperature are lower, the meeting on glass rises a mirage, affect the driver's line of vision thereby. This moment should open outer circulation wind, wind direction answers windscreen glass to blow. Because outer circulation is OK,discharge in-house steam outside dispatch a vehicle, cold air condenses not easily.

When if be in,car window is shut, use inside what can you produce circularly?

The loop is loop of the air inside the car below fan job inside, because outside air is entered,do not come, so we can circulate for some time inside open hind, feel air is more depressing, below outer circulation, outside air can enter a passageway, air is so fresher. So, we can maintain airiness with outer circulation, avoid the mist since the car window that humidity causes greatly too at the same time.

The loop is used at be being used when air conditioning of the open inside the car or sirocco commonly inside, perhaps compare in dust big, a section of a highway with bad air, prevent dirty air to enter a car inside, but, close in car below the circumstance, long-term inside be opposite circularly the member that multiply inside the car is harmful.