Totaled car, what now?

I will spare all most of the details. But, my boyfriend was ran off the road by a drunk driver. The driver swerved into his lane, and my boyfriend had no choice but to drive off the side of the road in order to avoid a head on collision. We just got this car literally this month (February). We have only had it for like two weeks. We financed the car. It was about 7,000 dollars. We put 1000 down on the car. Since the car was a 2008 toyota yaris, it may cost more than it is worth to fix. In that case, the car will be totaled. Our insurance will pay the cash value of he car to the finance company we owe, in the even that the car is totaled. We have not found out whether it is or not just yet. But, if it is, how will that affect us? This is both of our first time getting a car note. And this is exactly why I did not want one. Because I did not want something like this to happen. Will it be hard to get a new car note? (also the guy who drove my boyfriend off the road was uninsured, which makes this even worse for us). Is it possible to get a new car through the same finance company, and just have them tack what ever we owe them to the new car loan? I am so confused about how this works. And the cash value for our car is only about 4,000 in good condition. We got it from carfax. Please give me any information you can about this, I am so stressed out.