To meet safety rules, the engine is slung between the front wheels and designed to slip under the passenger's feet in a crash, while the raised floor protects against a side impact.
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.
Billionaire Peter Thiel, for example, argues that despite spectacular advances in computer-related fields, technological progress has actually stalled because the internal combustion engine still rules our highways, the cancer death rate has barely changed since 1971, and the top speed at which people can travel has ceased to improve.