@dalias @Sea1Am @jblue when I tried using the readily available window coverings they had no noticeable effect; I thought it might be worth trying again if there were something built in to the car itself, but I think using the fans would be better. Leaving windows open keeps the inside only a little warmer than the outside, but that’s not a general solution. I tried solar fans that hook on the top of a window, but they weren’t very effective and let in too much rain