Ever on the lookout for the next step in up in Big Brother policy, there's a new camera technology being developed in the UK at Loughborough University which can count car occupants by figuring out how much water and blood content there is inside the car. The obvious application is for trimming down those carpool lane offenders, trying to squeeze by the law with a dummy or a pet in the passenger seat. Look, privacy concerns aside, there's just something awkward about traffic cams tracking quantities of blood and water inside of commuter cars. Do we really want to let the Machines have that kind of inside (literally) information on us? [Thanks, Richard W]   ...