“Temperature! Iphone has to cool down before you can use it.” Ever get this alert? I did once, just after leaving the phone for five minutes while shopping. Good thing, because I hadn’t thought of this. Notebooks lying in the front passenger seat will get overheated too, but you might not notice it. Heat melts plastic, but can also fry your hard drive and other electronic parts. And it’s especially bad to turn on or use an overheated device. So, please keep electronic electronic devices out of the direct sunlight. If you have to leave one in a car for a little while, at least wrap it in a towel and put it under a seat or in the trunk.