No, the Tesla glass roof is heavily tinted and polarised with UV and IR protection coating. The glass itself absorbs UV rays, and the added UV coating helps to reflect and scatter UV rays away from the car. The IR protection coating helps to keep heat out of the car, making it more comfortable for passengers. The tinting helps keep the cabin cooler in direct sunlight. To further reduce the heat transmission into the cabin, you can use a glass roof sunshade for your Model 3.