Understand the $20 billion market emerging for transparent electronics as windows in buildings, greenhouses, trains. Include electric vehicle skylights making electricity and darkening at a touch. Consider smart watch glass, radar-enabled headlights, see-through billboards with OLED and micro LED images, "floating in space". Add conformal overlayers as invisible circuits, sensors, heaters, antennas. Metamaterials, 5G and 6G communications are involved and even new transparent photovoltaic overlayers boosting silicon grid power.