The modification consists of two interior 351 and 359. Interior 359. Convert to “18 Wheels of Steel: Pedal to the Metal”, the original authors are unknown.

Registered “step” interior chamber.
Fully independent model, Volvo bought the cabin.
Present their amendments, as in the interior of the cabin, and external drives.
Outside salon model is changed simultaneously with the inner.
I have registered with the company.
Tested version: 1.17.1

Credits:
JAWA, dmitry68, Myshanka, Smith, Kriechbaum & JujuQcTrucker, Knox_xss, Stas556