Bytes and pieces: News you can use

Older and fatter: Crash-test dummies need to look like real people to measure injuries in auto accidents — and for Americans these days that means looking older and fatter.

Medical 3-D manufacturing: CT Inspection aids production of 3D-printed medical implants.

British diesel cars: Diesel drivers in England will receive compensation to encourage them to scrap or “retrofit” polluting vehicles under a proposed bill designed to reduce emissions.

More cars and quality: Tesla is struggling with issues related to the quality of its cars.