Arthur Radebaugh (1906-1974) was the master of the bulbous articulation. He peppered his speculations about the Future with antennae, domes, tendrils and scarcely a corner to be glimpsed. Most of his machines were humanoid even when no sensible person would expect it. Even his toasters looked as if they would crawl across the breakfast table and bite you.
National Oil's regular single page ads were a clear challenge for Radebaugh, without recourse to his lush fruity colours (e.g. Bohn). Yet his air-brush technique is so impeccable, so knowing, it doesn't seem to limit him.