When using AP and approaching a slower car, have an audible warning like “in 2 seconds the car will start slowing down” so you can consider changing to another lane. This could be done by a small green/yellow/red indicator under the “max speed” sign. Green for no obstacles, yellow for “will slow down soon”, red for “slowing down now”
When driving in Europe, you must always be in the right-most lane on highways. When using autopilot, it will slow down long before reaching the car in front of you, when it may be better to switch lanes and avoid slowing down.
Moderator: Likely FSD will negate this need and the car will do the lane change automatically.