I’m reminded of this limited time flavour of Lays potato chips: Cinnamon Bun. They warped my mind because, although they had the texture and consistency of a potato chip, they tasted just like a buttery cinnamon roll. I’m haunted to this day by their memory.
Ah, but that’s by design: it also acts as a soothing white noise machine.
Then you might point out the exhaust and all it’s associated wastes, but that’s by design: it produces a heady and aromatic product for recreational huffing.
Then you might point out the vibrations, but that’s by design: the engine also provides invigorating massages to relax taut muscles.