Trying to keep the cabin from not be scorching hot next summer

most effective thing I have used so far:



Completely generic fit, but it's great. The one we have bounces out tons of heat and the real key is it deploys and stows fast so you use it every time. Saves a lot of energy that way.

 

Yep, I put those on all my cars. My windows are always down 1/4 inch and I gotta put up with the warning while exiting. The car interior will still get warm, but it isn't a blast furnace when you open your door.

 

Find shade tree - Open windows whenever possible ( if ever - ignore the windows open message in the MID and don't forget they are open if it starts to rain ....) - get a battery operated fan or if you're adventurous, run a three wire flat extension cord under the rear door and plug something in, wrap the extention cord in duct tape where it fits under the door https://99mpg.com/