There's nothing quite as insufferable as getting into a car that's been parked in the summer sun for a few hours. Seriously, that must be how living inside the sun feels like. Thankfully, there's a little-known trick for getting all that unbearable hot air out of your car and into the great outdoors. To do this, just roll down the passenger window, open the driver's door, and then swing the door rapidly back and forth a few times.
This will create a low-pressure vacuum that will suck out the hot air from the other side. It's a great trick that will save you from those endless minutes of heat torture.