It's been hot for last few weeks! Sufficient time to test the Adams Auto Advice DIY Sunshade. My Stepdad has reported that it has been working well in his Volvo S40, and fits quite well. It keeps the car cooler, and is a great talking point with people. I was actually surprised by how well it seemed to work. I encourage others to make their own DIY Sunshade. Your car's interior will appreciate it more than you will!