I had the same thing happen to me, but it was during rush hour and we were only going like 5 miles an hour at the time, so very low impact. I still definitely took advantage of getting new car seats. It was done under the person who hit me's insurance, hopefully that makes sense. They had to get a report from me, and then the other person, just to make sure they were at fault. There was a police report and such, so this obviously wasn't much of an issue. All I had to do was go buy whichever car seat I wanted, (I even called and asked if they had to be the same or equivilent, and they said no). I had britax before, but I bought some nicer ones, and obviously the expiration dates are newer. Then I had to take the old car seats to the actual insurance office, with the receipt for the new ones, and she cut me a check for the new ones right there no questions asked. I don't think she ever even glanced at the old seats. I'm sure someone just comes to pick them up to demolish them.