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and are "innovative" in nature, because, before they came to be used, they didn't exist in the realm of usable things by humans.

Improving on ways to create fire, does not innovate on the fire itself. Improving on the wheel, does not innovate on the invention of the wheel.

Creating a vehicle which takes advantage of the various inventions and innovations and discoveries, is innovation itself, even if the underlying components are not "new" or "innovative". A new type of engine would be innovation, but, once it's been innovated, it can be improved on, but not "innovated" on.

Get the diff?