car insurance company doesn't want to give me much, what should I do?

Thanks for viewing my question. I greatly appreciate it.

Just a couple of weeks ago, I was side swiped and then hit in my rear on the express-way at about 45 to 55mph, while stopped trying to avoid someone who spun out in the middle of the express-way. It has been very stressful, for a week I could not work, my neck hurt like hell, I saw the doctor and had to take 1000mg of pain pills twice a day for 6 days. This has stressed my wife out, who is 7 months pregnant, of course the good news is I am alive and nothing is broken.

My next problem is that I had a custom car that I purchased when it was about 2 1/2 years old, it was sitting in the garage for a while and then I started driving it. I drive roughly 110 miles round trip to school and work, so for the past 30 months, I have put around 74,250 miles on the car, yes that is a lot of driving, so the car had 170,000 miles on it when it was hit.

The car is a 2003 Honda Accord EX Coupe, with all the options, has been completely customized with a one of a kind body that takes 30 days to make in Japan. It's over 10k in upgrades, plus $2k for the rims and tires. In a few years I was just going to put in a new engine, as you can see the body was in mint shape.

Now I don't expect the insurance company to refund all these expenses, that is understandable. However, I feel the offer I am getting is insulting. The car was in perfect condition, as you can see in the pictures.

http://mopa.net/car/car1.jpg

http://mopa.net/car/car2.jpg

http://mopa.net/car/car3.jpg

http://mopa.net/car/car4.jpg

http://mopa.net/car/car5.jpg

http://mopa.net/car/car6.jpg

They are offering me just a little over $5,000 for the car. I have looked for the past 3 days on-line and cannot find any Honda Accord 2003 Coupe for $5,000, let alone anything in the condition that car was in. The closest thing I saw that looked anything like mine, was a 2003 Honda Accord Ex Coupe with 174,500 miles and the dealership is asking $9,999 for it. Almost all of the 2003 Accord Ex Coupe's that I have seen on-line are priced between $8,500 to almost $12k.

So basically, with $5,000, I'll go from a 2003 Honda Accord to a 1993 Honda Accord. I have seen Civics on eBay that are in the early 1990's that are selling for more then $5k and Civics are lower end Honda's. Of course, there is nothing wrong with Civics, I have owned one in the past and loved it.

The way I feel about it, it seems that the insurance company just bases a price of a car on its mileage. For example, if I were to buy a brand new 2012 car for $45,000 and travel the USA for 6 months, put 200,000 miles on it, does that mean the car is now worth $15,000?

I am not asking for much, but I believe I should be able to at least be able to get something that is comparable, which would be a basic stock honda accord for around $8,500.

What should I do?

Thanks for your input and suggestions.