"We've designed a hull from various composites that can withstand heat and pressure and shield up to five passengers," he said.

Critics asked if the hull might possibly suffer the same fate Rush's earthly submersible met near the Titanic, but he quickly denied any similarities.

"This is an entirely new design and more than capable of traveling through Hell. The two situations aren't even remotely the same," he added.

http://yahoonews.com/stockton-rush-unveils-new-sub-design-in-hell.htm

(http://www.autoadmit.com/thread.php?thread_id=5363054&forum_id=2#46473970)