1. Wind down the front passenger ‘s window;
2. Open and close the driver’s door 5 times.
Principle: hot air from car internal will be ‘drawn’ out from driver’s door ; external cool air will flow in from the front passenger’s window.
In the video demo, the external temperature was 30.5 C, internal car was 41.6 C. After the exercise, internal temperature dropped by 8 C to 33.5 C.