First off, I would say that the neighbor was negligent for having his sprinklers set up to spray outside of their own yard, unless it was abnormally windy. I don't think you should have to ask around if anyone has an automatic sprinkler system before parking their car.rpratchard said:
On your situation, I would park your car with all the windows open, in the sun, and away from all sprinklers, and it should dry out, and be good as new. Or, you may want to drive around with the windows closed, and the A/C ON, and it will act as a dehumidifier, and dry out the interior.
Good luck !