Planes, speedboats and flashy cars are passé, how about getting your very own submarine. The C-Quester is a submarine that is available as a two-seater and single-seater models. It can cruise at 3.5mph and 50 meters for an impressive 150 minutes at a time. The joystick control allows you to maneuver sub like a pro. Pressurization in the cockpit of these subs remains at a level whereby you don't have to worry about decompression sickness. Boarding these subs through the cockpit is pretty easy, as they remain stable like other boats when on the surface.

The C-Quester starts at $128,000.
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