Of course you can get microdrives, but if the moving parts make you nervous, Pretec offers a 12 GB flash card.  It's only $14,900.  Then you'll need a $60,000 digital camera to go with it.  Somehow that nifty $3,000 Nikon D2H just seems inadequate.

http://www.dpreview.com/news/0405/04052601pretec12gb.asp