3 things come to mind........

1. If you have pets make sure they do not get anywhere near the puddle......Antifreeze is very sweet tasting, which makes animals like it. It's also EXTREMELY poisonous. Best bet is to clean it up immediately, you really don't want any mice or other rodents getting into it and expiring within your walls. (I've had that happen a couple of years ago...not pleasant!)

2. If you refill your antifreeze....be sure to use the correct mixture......don't just use straight water. Antifreeze not only keeps the coolant from freezing, but it also raises the boiling point of the water, and helps to clean and lubricate the cooling system and it's components.

3. No, the dealer will not repair under warranty the damage caused by a road hazard. It wasn't a factory defect, therefore you'll neet to contact your insurance to see what they'll do, or pull out the 'ol wallet and suffer the pain!