BMW 750hl (2002)
The current 7 Series is available on two different platforms: the standard-wheelbase E65 (2990 mm, 118 in) and the extended-wheelbase E66 (3130 mm, 123 in).
The E65/E66 7 Series features BMW's first of a kind iDrive system, consisting of a video screen in the dashboard and a controller mounted on the center console that is used in a similar way to a computer mouse. Using a system of eight menus, most of the car's climate, audio, navigation, suspension and communication settings are controlled via iDrive. However, the system has been criticized by many automotive writers as being too complex and not intuitive enough.
The heart of the 750hL is a hybrid, 12-cylinder combustion engine with two independent electronically controlled fuel induction systems. These systems allow the 750hL to run on either gasoline (petrol) or hydrogen.
The 750hL has a hybrid 12-cylinder combustion engine capable of running on either gasoline or hydrogen. The 5.4-liter engine has two independent, electronically controlled fuel induction systems. The hydrogen engine offers excellent torque and acceleration, while the specially insulated 140-liter tank for the liquid hydrogen provides a range of 400 kilometers.
Electricity generated from solar power is used to split water into hydrogen and oxygen. Oxygen is released into the atmosphere, while hydrogen is liquefied and stored at a very low temperature (-253 �C).
During internal combustion, the hydrogen combines with oxygen. The resulting energy powers the vehicle, while the hydrogen is returned to the environment as water. Harmful emissions are virtually eliminated.
By cooling hydrogen to -253 degrees Celsius, hydrogen is shrunk to a thousandth of its original volume. 70 layers of aluminum and fiberglass sheets between the exterior and interior vehicle walls insure that the liquid hydrogen remains at extremely low temperatures.