Thank you for responses. Got in touch with my installer, he responded immediately to my text.
it was hard water as it came from the garden hose that the water was sprayed unto the garage door as my family was trying to rinse away bird droppings, not knowing that I coated the car as they are ignorant of such things.
thankfully I caught it within minutes of it happening, the sun was setting and it was not extremely hot outside
was instructed to use plush microfiber ONR wet towel to wipe , followed by plush microfiber towel to dry.