From inside (document excerpt):
Owner’s Manual for 2010 BMW X6 E72 Active Hybrid. BMW ActiveHybrid X6 has two different types of drive: A combustion engine and electric motors. This combination enables a particularly efficient energy management. Additional advantages include special performance specifications such as an optimized acceleration through assistance to the combustion engine provided by the two electric motors.
Table of Contents
Notes
At a glance
Cockpit
Controls
Driving
Everything under control
Climate
Driving tips
Things to remember when driving
Mobility
Refueling
Wheels and tires
Engine compartment
Replacing components
Giving and receiving assistance
Reference
Technical data
Everything from A to Z
Source: http://www.bmwusa.com