It was supposed to change the way people felt about urban transportation. A personal hovercraft destined to spearhead the brave new world of tomorrow? Maybe not. When the Segway Human Transporter was revealed to the public, the collective disappointment put a damper on the lofty dreams of creator Dean Kamen. To which he answered at Segway's first public demo, "So sue me." No. The world's first "self-balancing personal transportation device" did find a niche on the less grand avenue of carting tourists around urban centers. Add to that folks who don't mind looking like dorky computer geeks in public. The machine is a tempting joy ride into the world of advanced robotics. Indeed, the smooth ride and maneuverability in tight spots is big fun despite the dirty looks from pedestrians and bicyclists. In fact those dirty looks are the best advertisement for SHTs and their promise of a new and better tomorrow.