A new tool, "Haulin’ Studio 2024," was released last month by Russian modder "Dmitry68." It allows modders to convert ETS2 models backward into the Haulin’ engine. This means we could theoretically see the Tesla Semi or the new electric Volvo VNR in 18 Wheels of Steel: Haulin’ soon.

Developer: SCS Software Publisher: ValuSoft Release Date: May 2006

The Haulin' modding scene is niche but active. Your best bets are:

If you want to make a base truck "hot" (faster and more powerful), you can edit the .sii or .def files using a text editor like Notepad:

Optimizes the map for passenger routes rather than cargo hauls. 2. Map Expansions (More Miles)