Your American Dream Starts Behind the Wheel of Your Own Big Rig! North America's open roads await! You ain't working for the Man any more! You're the owner of your own trucking business and you call the shots. Build your empire one rig at a time to dominate the roadways and outbid the competition.
Most popular community and official game content for the past week.  (?)
What does popular mean?
It means the content you're seeing has been rated up more than it has been rated down for the given time period.