The SCCA Pro Racing World Challenge and Continental Tire Sports Car Challenge racing series, run by the Sports Car Club of America, and the International Motor Sports Association, respectively, utilize modified production-based cars, sports cars, and touring cars, similar in spirit to the original Trans-Am racers.
U.S. Submarines, Inc. U.S. Submarines was formed in 1993 and has had a continuous internet presence since 1996. Recently we had a dispute with our internet service provider and have had to switch ISPs. We have a new Web site under development.
The American nuclear seawolf class submarines can dive to about 2400 feet (730 m). Although the truth is likely to be deeper as the full knowledge of submarine depth is kept secret in a lot of case's. It is said that most nuclear submarines can stay under water for a year but i am not sure if this has been tested.