The boy pointing reminded me of the propensity for small boys to touch things just to see what will happen. Here, I populated the inside of the bus with an array of devices derived from a stock image of a vacuum tube, something that fascinated me in my youth. Various glowing edges and glow layer styles plus some hue-saturation adjustment layers provided the colors. I borrowed some lightning I had manufactured elsewhere to provide a little excitement. I recreated the window frame to give me a little more flexibility in setting the scene.