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.
It is a legacy setting. I asked the SC about it and they confirmed that it was set at 130 mph. It was simple request to ask them to bump it up to the current maximum of 155 mph. That being said, I have not tested it, nor do I have any plans to.