Most cars (all?) have the option to dim the dashboard backlight. I find Saab's solution to be extremely elegant - on some, if not all models, there's a night m

Most cars (all?) have the option to dim the dashboard backlight. I find Saab's solution to be extremely elegant - on some, if not all models, there's a night mode button - what happens is that all non-essential instruments are simply dimmed to black (leaving only the speedo lit), until something happens which warrants your attention; the instrument in question will then come on. Simultaneously, it dims all button backlights &c to just about off, so that you only get some assistance in locating the control you're after, not losing your night vision the moment you let your eyes stray from the road.