How do you illustrate the inner workings of electric cars without resorting to plain cutaway images and videos? If you're VW, you make a rolling skeleton on wheels. The company has unveiled an eGon model that strips the e-Golf down to its inner workings, but remains driveable -- you wouldn't take it on the highway, but you could get a feel for how everything comes together when it's moving. You'll also find QR codes across the car to provide more information about individual components.