Sky was a bit weird before update but the new sky is really nice, simple and nice for eyes, better than useless post process effects. They always update with nice and usefull things as custom GPS root, sound for cabine switchs, sun orientation variation from north to south, tire sound, new truck, new licence, some new roads and city, always for free! It's slow for some people but the game is going on the right way and the amount of players are still growing every month, unlike triple A game wich are forgotten 3 months after their release.
ETS2 is always on the top 20 of steam statistics with a peak of 20 000 players every days.
I was more surprised looking about youtube video popularity.
The most viewed video for Pcars (PS4 trailer) got 800 000 views and 5500 likes, uploaded from Playstation channel at june 2014.
Assetto Corsa is far from that, only few video are going beyond 200 000 views, recent PS4 trailer from 12 days ago, is still under 100 000 views and only 300 likes.
The ATS trailer I linked yesterday wich was released 3 days ago got 130 000 views and soon 6000 likes.
A 1 year old ATS video gameplay got 1 500 000 views and 15 000 likes !!
The point is not against Pcars or Asseto corsa wich are great game indeed, but I really thought that these racing games was more popular than a simple trucking game from east of Europe wich have still no plan to go on consoles to enlarge its popularity.
Maybe the fact that the game is alone in its own category, and still nice for its customers might be a reason.
Then, Multiplayer mod wich is great mod as the game, with every days more than 6000 people playing at the same time at critics hours is another reason too, as it is the reason I am still playing myself.