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.
I gotta say, there should be a way to do it from within the mobile app, as it does NOT automatically populate when "home" and "work" ARE set in the car. So, there has got to be a more efficient solution to this.