I’ve heard of days that are hot enough to fry an egg on the sidewalk, but what about baking cookies in your car? Baking Bites first wrote about other people doing it, then decided to try it out for themselves- and it worked (after about 2 1/2 hours). The cookies didn’t brown, but were “slightly crisp at the edges and chewy in the center”. Read more at Baking Bites.