From old German (and modern Afrikaans), "Die" means "the"... pretty sure the car got it's name from Wagner's Die Valkyrie operas.
Which fits it pretty well... it's quite a dramatic bit of styling.

[ame="http://www.youtube.com/watch?v=1aKAH_t0aXA"]http://www.youtube.com/watch?v=1aKAH_t0aXA[/ame]