http://money.cnn.com/2013/10/17/autos/musk-bond-sub-tesla/

Musk plans to take the movie prop and turn it into an actual car that transforms into a submarine, the very thing it was built to portray in the movie.
"I was disappointed to learn that it can't actually transform," Musk said in a statement provided by Tesla.

"What I'm going to do is upgrade it with a Tesla electric powertrain and try to make it transform for real."