Dash cams have surged in popularity due to their utility and simplicity, even capturing extraordinary events like a meteor in Russia. These devices can be easily constructed using JavaScript, Raspberry Pi, UI code, and PubNub, as demonstrated in two tutorials by Sunny Gleason. In the first part, users assemble hardware with a Raspberry Pi 2 Model B, an 8 Mpix camera module, and a wifi adapter, followed by setting up the operating system, configuring the camera, and using a Node script to capture and send images via PubNub. The second part involves creating an Angular JS-based user interface to view live images on a phone, utilizing PubNub for streaming and Bootstrap for a clean design. This project highlights the Raspberry Pi's versatility, with potential extensions like a license plate reader, automated tweeting of interesting shots, or face detection.