The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels.

See also:
Airbags
The following airbags are located under the marked covers:
1. Front airbags
2. Coupe: head airbags
3. Side airbags in the seat backrests
4. Convertible: knee airbags
Pro ...
Summer tires
Do not drive with a tire tread depth of less than
0.12 in/3 mm.
There is an increased danger of hydroplaning if
the tread depth is less than 0.12 in/3 mm. ...
BMW ActiveHybrid X6
Like other so-called two-mode hybrids, the ActiveHybrid can accelerate
gradually on electric power alone, up to 37 mph in the X6's case. All-wheel
drive and a seven-speed automatic are standard. B ...
