Well, Schott Spezialglas AG's "Conturan" glass is sort of a big deal, in an anonymous, hiding-in-the-open kind of way.
- The special glass is more permeable to light and cuts reflection significantly.
- According to a German study, a driver processes an average of eight sensations per second. We sometimes spend an extra fraction of a second looking at our instrument cluster due to glaring from the instrument cluster's glass. Conturan reflects light at a rate of only 0.5% (instrument panel glass in other cars reflect at 8%).
- With such a low reflection rate, the instrument cluster does not have to sit so deep in a dashboard, away from the sun. Phaeton designers thus had more freedom in where to place the cluster.
- Normal glass is etched to reduce reflection. The trade-off there is a drop in transparency. With Conturan, three metal oxide coatings are applied to both sides instead. Each coating has a maximum thickness of 1/100,000,000 of a millimeter.