dpa) - A cleaning robot RC 3000 by Kaercher is presented by Vicky at the international do-it-yourself trade fair 'Practical World' in Cologne, Germany, 11 March 2003 Stock Photo - Alamy
TO GO WITH STORY BY DAVE MCHUGH** The disc-shape robot vacuum cleaner "RoboCleaner RC 3000", front, of German cleaning system producer Alfred Kaercher GmbH & Co. rolls back to its charging station,