Toshiba just updated their 12.1-inch Dynabook SS RX1 in Japan with a new 128GB SSD option. Build RX1/TAE bundles 128GB of solid state disk with internal, KDDI EV-DO data module, 1.2GHz Core 2 Duo U7600 processor, 2GB of memory, Intel 945GMS Express graphics, a 1,280 x 800 pixel panel resolution, and choice of 6.2 hour or 12.5 hour batteries.

How much? Try something like more than $4,000 when it pops for Japanese retail next month.
Source- http://www.engadget.com/2008/03/17/toshibas-dynabook-ss-rx1-worlds-first-laptop-with-128gb-ssd/