The broad lower fenders are aerodynamically sculpted to manage the flow of air to the engine bay and front brakes, whilst reinforcing the powerful, dynamic road presence of the new Lexus signature frontal design.
What you see in the diagram above is that the framework maintains the in and out points of the WebKit flow, but takes a detour in the middle using its own physics engine, render engine and rules framework to replace the native WebCore functions.
The power electronics unit integrated in the engine compartment operates at a level of around 370V and manages the flow of high-voltage energy to and from the battery and the electric motors.