bmw m4 black
The M4 features Active Sound. A live amplification of the engine's natural sound inducted into the passenger cabin via speakers in the car. BMW says this technology has been used so that the well insulated cabin can reduce road/wind noise but still provide the driver with the sporty sound of the M powered engine.
Last update at 15 · 03 · by milo‧‧‧ One of 7755