In an early episode of The Simpsons, Homer is asked to design his dream car. The result is a monstrosity, with a separate soundproof dome for his kids to sit where they can be restrained and muzzled. Two decades later, and Toyota's latest vehicle will now let you scream at your kids without ever needing to turn around. The 2015 Sienna minivan uses the car's built-in microphone to amplify your speech through the rear speakers -- solving the very real problem of parents not paying attention to the road when the little ones are getting unruly. There's no word on if this feature will come across to other vehicles in the range, but it might go well with the kiddie-customizable Camatte that we saw a month back.