ETS2 - Mercedes-Benz S400D V4.0 (1.40.x)

Changelog:
Fixed headlights (it may be reconfigured again in the next update)
Reworked sound (cabin insulation on low to medium speeds is as close to its real-life counterpart)
Reworked engine configuration from scratch and improved realism
Reconfigured transmission (improved realism)
Reconfigured chassis (improved realism)
Reconfigured tachometer animation
New license plate
Minor edits and fixes
Removed unnecessary files
Changed the tachometer display background to black

Authors: LazKopuz, semi update Nimit