Planilum. What sounds like the material that should be powering the flux capacitor in Marty McFly's Delorean is actually a special type of light emitting glass. At first glance, it looks like many of the LED lighting solutions we have seen before but LED's have nothing to do with this.
It's all about plasma and phosphorous. Electricity is conducted through the glass through transparent layers (effectively invisible wires), which results in the glowing circles of light. Sure, the 20 year life span is a positive feature of this currently pricey lighting option, but the real advantage we see is in the size, specifically the thickness of these panels.
Go to any home improvement store and you will quickly find out that adding lighting which sits flush to the surface requires enough depth behind the drywall or in the case of cabinet or furniture lighting does not sit flush at all. Since the heat output should be minimal with this, we are assuming that these can be shoe horned into pretty tight places without a risk of fire or becoming a visual distraction. Now if they can only sort out this $3600 price tag we can think of a few places in our own home where we could use this.