Making a large, heavy vehicle like a pickup truck economical isn't the easiest of tasks.
You can drop in a more efficient engine, of course. But it'll struggle against poor aerodynamics and ample weight.
Ford has done both the first and the third of these, the latter handled by a new aluminum structure. And it's really caught the attention of other automakers.
Aluminum cars are nothing new in the auto industry, even if they aren't widely used.