See also:

The concept
HDC is a downhill driving assistant that automatically controls vehicle speed on steep downhill gradients. The vehicle moves at approximately walking speed without braking intervention by the ...

Features
The 2009 X3 starts at $39,700 and comes standard with leatherette upholstery, eight-way power front seats, a panoramic moonroof and rain-sensing windshield wipers. There are four option packages a ...

The concept
This system can be used to select a desired speed that the vehicle will maintain automatically on clear roads. To the extent possible, the system automatically adjusts the speed to a slower veh ...