Today I put unshucked corn into the solar oven at 1:00 and got it out at 2:30. It was sunny most of the time, but a few clouds passed by here and there.
I took it out after an hour and a half, shucked it, and ate it. IT WAS DELICIOUS!
Now this will be my very favorite thing to cook in the solar oven. It takes zero preparation, and you don't have to worry about timing it perfectly. You really can't overcook anything because its more like a crockpot, things just cook slowly in there.