I’ve been using the Automatic widget/app for a couple of weeks and have found it very useful. The screenshot below is from the companion website and shows some of the data the device captures. On a recent trip from St. Louis to Jefferson City I saved seven bucks by keeping my speed (mostly) at 70 mph or below. The app beeps once when you exceed 70. I also avoided “rough breaking” and “hard acceleration.” For those with jobs that involve tracking mileage, this would be a hand/automatic way to do it.