Inventos - Gadgets


link: http://video.google.com/videoplay?docid=-3727573931291365087&hl=en


link: http://www.youtube.com/watch?v=kuGvPhglGEc


link: http://www.youtube.com/watch?v=KGvibmr2CIU


link: http://www.youtube.com/watch?v=_wGqAPdD_E0

Este ultimo medio como que no me convence:


link: http://www.youtube.com/watch?v=JPS2l5fQ55A


Saludos. Esteban³.