the first thing is keep calm. dont stress yourselves out.
the inusrance company will instruct you what to do about the car. so just wait. this is not the most urgent and important issue.
the first things is to check your hu*****and, get him home or to doctor if he feels anything, not just today, in whole next week or so. monitor any head/neck/back pain or body ache. the health is the most important, normally the insurance covers this part expense.
then just talk to insurance to handle the car. and ask around when questions arise.
take care.