I spend a fair amount of time on the french autoroutes & over 15 years have studied & learnt the art 8)
They very rarely hog the outside lane , this is purely for pulling into to pass then pull back in (it does work & for the most part keeps traffic flow at optimum speed)
They never as in NEVER flash you out ! Pull out into the fast lane with traffic approaching at your peril
If you do want to pass the car in front then position yourself approx 300/400 mm from target vehicle with indicator active
Drive a black Audi,VW,BMW or Mercedes for optimum effect , ,
or if possible any Porsche :wink: for some reason this renders them courteous & the roads are yours