Mercedes-Benz S400D v4 1.40

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