"To prevent damage to the exterior, immediately remove corrosive substances (such as grease, oil, bird droppings, tree resin, dead insects, tar spots, road salt, industrial fallout, etc.),"
Not washing it could fuck it up. Got it.
"CAUTION Failure to put Cybertruck in Car Wash Mode may result in damage (for example, to the charge port or windshield wipers). Damage caused by car washes is not covered by the warranty."
Also washing it could fuck it up.