Those fold up cardboard window covers...Does everybody know what I'm talking about? It was a horrid 96* here today, and inside my car had to be 120*. The steering wheel was burning hot. I want to get some sort of shield to put up on the inside of the window, but wonder if the usual ones that other cars use would work in our smarts? Does anyone have one that works, or know of a special one just for smarts? It looks like it's going to be a nasty hot summer.