An anonymous reader writes: If you're tired of yelling at the kids without the help of technology, Toyota has a van for you. From the article: "The latest version of the company's Sienna minivan has a feature called 'Driver Easy Speak.' It uses a built-in microphone to amplify a parent's voice through speakers in the back seats. Toyota says it added Easy Speak 'so parents don't have to shout to passengers in the back.' But chances are many parents will yell into the microphone anyway. And the feature only works one way, so the kids can't talk back. At least not with amplified voices. The feature is an option on the 2015 Sienna, which is being refreshed with a totally new interior. It also has an optional 'pull-down conversation mirror' that lets drivers check on kids without turning around."