I get this kind of feeling often when I ride my motorbike. Like just the materials alone, a variety of steels, aluminium, copper, ..., different plastics each chosen for their specific purpose, from insulation around cables to rubbery seals so the housing of the headlight. How many people are actually involved just gathering and refining the raw materials?

And all of these parts play together in harmony, so that I hop on and just start driving with no second thought.

I take the machine for granted, sure its a hobby but its also what I drive to work with. But it is a marvel of engineering no matter how I look at it.