Your best bet is to just park away from the sprinklers. Or put a cover over your E overnight, every night. Black + water = spots.
Great vinegar advise! That should work to get the spots cleared up, then make sure that you keep it waxed thoroughly! Wax really helps resolve the removal of some idiot sprinkler alignment spots in the future! Most important, if you see this occur in the future, get it washed before it sits in the sun with the hard water spots.... that can be the death of your surface!Mix a 50/50 solution of soft water and white vinegar. Use a spray bottle and spray on spots. Take an Absorber cloth and wipe off the spots. Clean again and you can focus on the local of the spots.
Or, get a garage, cover, or put plugs in the sprinkler heads.
Good luck.