I have no doubt that medical care at the time of the accident would just be a given. Its what might happen in relation to ongoing expenses that you may be looking at for years or even life. In some instances that would be something you would have to deal with, but God forbid you're looking at something like a child paralysed due to their injuries when you are looking at millions of dollars in care over that child's life.

Your claim for damages for injuries sustained by your child and ongoing treatment could be see you potentially looking at an apportionment of "contribution" or responsibility. For example, if you're not wearing a seat belt then your payout will be reduced by X%. The actual accident might have been in absolutely no way your fault, but you contributed to your injuries by your failure to wear a seatbelt. I have no idea if they would apply the same "logic" to using a carseat that while perfectly safe, is not an approved seat here, but that would be my concern.

I don't mean to discourage anyone from importing a car seat - as I've said previously I'm very torn on this myself - but its not just treatment at the time of the accident that may or may not be an issue.