You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
Most aftermarket car stereo shops can install Dynamat. That being said I dont think it will help much at highway speeds. Most of the noise at speed is wind noise on the Model X transmitted through the huge glass windows.
In an accident it is actually better not to have the hitch in. The bumper is designed to dissipate the energy during an accident. The hitch is rigid will transfer the energy directly into the frame of the car which can lead to more damage and shock inside the cabin. It also acts as a...