I actually saw an ad on a website for this article and it looked interesting, so I clicked through and read all 10 pages. High Tech Cowboys of the Deep Seas: The race to save the Cougar Ace. It is about a salvage company and their effort to save a car-transport ship that took on water and was abandoned. It talks alot about the people who do this type of stuff and what they did for this particular job. They only get paid if they are successful but they can make a lot of money.
There is also an article from the Wall Street Journal about what happened to the cars from the boat. How to Destroy Brand-New Cars.