In this installment, released in 2004, the user can travel across the entire continental US, and also through northern Mexico and southern Canada, through 30 cities. The sleep timer was brought back in this version. It has an improved traffic model. 18 Wheels of Steel: Pedal to the Metal requires OpenGL This installment is thought to be the 2nd most popular game in the series, with 18 Wheels Of Steel: Haulin being the most popular. There is also a map editor but it has bugs but also the game comes with a new map with new cities like Sacramento and a couple new mexican cities but it looks a lot more different than the original. It also has the fastest map to date besides Haulin'.