Version 1.38 brought several transformative features that enhanced the realism of the European trucking world:

This was the "hot" feature of the 1.38 update. It added realistic shadows and depth to the world, making truck interiors and exterior environments look more grounded and lifelike.

ETS2 is boring on a keyboard. You need a controller (Xbox/PlayStation) or, for $30, a used Logitech Driving Force GT wheel.