Up first the is the The Neptune Sport Micro. At 12 knots, you will be able to outrun any forces of good. All that power comes from the two muli-axis thrusters and steering from the tailfin.
Equally cool, although slightly less James Bondish, is the semi sub Raonhaje Ego Submarine. The cockpit is submerged between the two floating pontoons. The steering is supposed to be similar to a car. With the acrylic windows and all electric systems with a an 8-hour battery life, your are sure to get some exploring done.
Both seat two so find an evil sidekick. While you are saving up to buy either, you can work on your maniacal laugh and stroking your evil cat.
Hat tip to Underwater Thrills.