Every artist remembers the moment they tried to draw a car. It usually starts as a sleek masterpiece in the mind—a futuristic speeder tearing through a neon-lit city. On paper, however, it often ends up looking like a sad potato on wheels.
(free public domain PDF) – Classic for mechanical/human hybrid forms. Search for "Loomis PDF" legally on Archive.org . Every artist remembers the moment they tried to draw a car