is this really what kurzweil meant by "fully immersive virtual reality," though? only involves the senses of sight and hearing...
I also think a controller gives a bit of touch sense to the experience. Using your hands and feet for full controls of a plane stick and rudder or car wheel and pedals lacks only the feedback from acceleration and weather. Looking down to see the pedals and "feeling" your vehicle react to your foot pressing could be more psychosomatic than we really know yet.