If you’ve used a mapping app to guide you on a road trip, you know how helpful a car monitor can be. But what about those restless passengers? With this $99.99 Auto Wireless Car Adapter, you can use that same screen to stream movies or other video from your iOS or Android device, turning any car trip with kids into a relaxing ride. This adapter comes with a USB cable but can connect to most modern cars by Bluetooth (and its dual-connect tech allows it to pair with a second device the same way). It’s pre-loaded with media apps like Netflix and YouTube, so all you have to do is sign in on your p…