I canīt find out what does a "supreme expression" mean within the following context.
More power, new refinement and better fuel economy for the most accomplished, most capable, luxury four-wheel drive vehicle in the world. The new 2010 Range Rover LR-V8 Petrol Engine. In two distinct forms. LR-V8 Supercharged, the supreme expression of the Range Rover, reaches unsurpassed levels of performance with a power output of 510bhp.