It would be nice to have the ability to add planned breaks along a route. Either for refueling or for other needs. Refueling breaks can be done semi-automatically based on entering vehicle year/make/model, with estimated fuel economy, or entering manual fuel economy observed by the driver. You should also be able to add planned breaks (as many as you want along the way) along with an estimated time for the break. This will give you a more realistic ETA. If you're driving across the country, the ETA provided isn't realistic because it doesn't account for at least fuel stops.