Space exploration seems to get all the glory, but there's another virtually unexplored frontier right here on Earth: the deep sea.

The Exosuit, a 530-pound metal suit, will for the first time allow a human to plunge down to a depth of 1,000 feet without being crushed by the pressure of the ocean.

The aluminum shell looks oppressive and suffocating, but feels weightless once in the water. The diver inside the suit can pick up marine life using robotic claws and has thrusters on the feet to move around.

Because hydrogen fuel infrastructure is more or less non-existent, Hyundai's rollout will be small. The car will be available at select dealers in Southern California, all within range of the company's sources of hydrogen, which include a nearby waste water treatment plant. Local drivers will be able to "gas" up for free at any of seven distribution stations...