Steve Caplin goes all robotic in this week's tech show. As well as a robot waiter and a robot pizza maker, there's a pea-sized robot doing an obstacle course and a sweaty robotic finger. At Google, there's an argument over whether one of its robots is actually alive, with an engineer claiming it is and trying to get it a lawyer. Internet Explorer is no more, there's a solar panel-festooned car and cars charged by an induction loop. And Sony have brought out a high-end Walkman MP3 player costing a mere £2,999.