Earlier this week, there was an interview with Ageia in which they mentioned the possibility of their hardware becoming more embedded in the future, moving away from standalone cards. Already now they have announced the introduction of a mobile PPU, dubbed the PhysX 100M.
The new unit, designed for notebooks, aims to bring the advantages of a physics processor to high-end notebooks, such as have become more popular the past few years.
It might seem contrary to the idea of a notebook altogether, but this could turn out to be a very smart move by Ageia. Almost no one wants to couple another card onto an already expensive desktop that has a discrete graphics card just to accelerate physics in a game. Offer them a machine that already has it built-in, however, and you might just convert a few people.