Gauges are one instance where e-ink's principle characteristic, persistence, might actually be a strong drawback. For an instrument dashboard, you're better wi

Gauges are one instance where e-ink's principle characteristic, persistence, might actually be a strong drawback. For an instrument dashboard, you're better with an active display whose failure mode is to not display any information (or some nominal low/nil response) rather than continue to show the last updated value through all eternity. That last would be particularly bad for speed, fuel, or battery-status displays, say.