ThIS 2011 Hyundai Equus comes standard with stability and traction control, antilock brakes, electronic seatbelt pre-tensioners, active front head restraints, a lane-departure warning system, front and rear parking sensors, a rearview camera, a driver-side knee airbag, front and rear side airbags, and side curtain airbags.
Silence. That's the most notable attribute of the 2011 Hyundai Equus. At idle it can seem as quiet as a hybrid vehicle with its engine automatically shut off. Once underway, things don't get much louder, as the engine is just a whisper, wind noise is virtually non-existent and only a slight tire howl can be heard because everything else is so hushed.