Allowing us to set a speed limit / ceiling in the preferences (for example 80km/h), then Waze calculates automatically straighter, shorter roads with lower speed limits because it knows we ride slower and so we won't go at full speed on highways. It will also give a correct ETA. For typically one hour more than a 4 hour trip on highway road, we can have less kilometers to run, a way better fuel consumption because of the lower speed, and prettier roads with less traffic !!! Perfect for old cars, or small motorcycles !! We need this so much in France, even for modern cars when it has a better consumption at 100km/h than 130km/h, because highways are really boring and often longer than a combination of "nationales" and "départementales" with decent speed limit.