Hello everyone! I need advice on tinting for my Model S. This will be for side window and rear window only, not front windshield. Can you give me recommendations on: 1. Best film for durability and heat protection while minimizing drastic change in car's appearance and remaining legal in CA? 2. Recommended shops/installers in San Diego area? 3. Does tinting affect any of the car's functionality, i.e. GPS/sensors/LTE reception (car not phone)? 4. Approximate cost, if you are comfortable posting. Thank you very much!