My ice car has a glass roof . It ' s a super darktint so it looks like opaque black from the outside but you can see through from inside . Even with the tint it ' s still uncomfortably hot on a sunny day if the AC isn ' t running ie when parked , though opening the windows is often enough for comfort , depending on the day assuming the air outside isn ' t full of dust or cotton or pollen . In winter , the cabin air loses heat noticeably quicker than when the insulated roof panel is in , which is no problem if the car is operating or for short waits , but if you like you hang out in your car or snack or read for example , you ' re going to be either running the AC a lot more or uncomfortable . The rapid heat loss in winter doesn ' t bother me as much cabins lose heat to glass regardless of the roof , It ' s the inescapable heat of not having full shade on a hot day that I don ' t like , so I use insulated panels in summer and bare glass in winter , because I love rain on a glass roof D TLDR I would only want a glass roof provided there is a stylish and practical way to make it opaque and insulated during some parts of the year .