Technology has progressed and giant robots are no longer impossible. The richer tennis champions and parents of future tennis champions may want a robot that can play. It doesn't require wheels, just some cameras and a very long arm. It can have a training mode, a practice mode, and a "just knock the ball around for a while" mode.-- Voice, Apr 22 2008 Baked by Ivan Lendl-- james_what, Apr 22 2008 random, halfbakery