American Truck Simulator's first released version included only the state of California, and its developers have been working their way eastward with each new state added via DLC. Work is currently ongoing on both Oklahoma and Kansas.
SCS Software have got better at replicating the long roads and countryside of the United States, however, so they've also been going back periodically and revamping their very first. Five cities in northern California were updated last year in a second update, and work is ongoing on a third phase of revisions that should arrive soon. SCS Software this week shared screenshots of their new Santa Cruz, which has been "revamped from the ground up".
