HUD (Head Up Display) , is a small until with a projector onto the windscreen showing both GPS info and or OBD (car computer OnBoard Diagnostic info) info.
It's main use is showing the speedometer up on the windscreen glass, but also time that can be obtained GPS , speed GPS and compass (heading) GPS.
I bought two cars over a year back, one had a GPS compass built in it's console (Captiva CG SX), the other did not (Subaru Outback) , both are almost twenty years old.
While investigating for an accessory vehicle compass (for city driving) I came across HUD units with windscreen projectors, and includes GPS speed alarm too.
Considering 40kmh for the alarm solved a large point because of school zones and many suburban streets rebranded heavy pedestrian and bicycle traffic into 40kmh streets, it makes perfect sense for speed, alarm setting 38kmh , satellite GPS calculated time and GPS compass for long cross city driving. Too the new default urban road speed limit is 50kmh so it's a good warning from the alarm if you don't notice your acceleration.

The Captiva had a compass inbuilt 2007 , but these devices (HUD) prove weight in gold in GPS mode!

Should this service be standard in all cars?

You don't want to get booked speeding particularly by simple overspeed, you don't want long drives of over 10kmh in strange areas finding you only went round in some type of giant circle!

A bit about..

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This is the new one, should been the original.
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I lived in the US for a few years back at the beginning of the 2000's.
I had a 1995 Pontiac Bonneville, that had a factory HUD. Mostly just speedo etc. It was so good being able to see your speed, without taking eyes off the road. I always thought, after that, it should be mandatory equipment.
Now we've got on-board entertainment systems with touch screens to completely distract us.

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damned67 said..
I lived in the US for a few years back at the beginning of the 2000's.
I had a 1995 Pontiac Bonneville, that had a factory HUD. Mostly just speedo etc. It was so good being able to see your speed, without taking eyes off the road. I always thought, after that, it should be mandatory equipment.
Now we've got on-board entertainment systems with touch screens to completely distract us.

This post is defunct it has a newer thread says "reworked post" and much the same name as this thread.

These are much more superior, these HUDs have GPS speed, UTC set timezone rules from satellite AND a speed alarm , ALSO the C5 version has an "RPM alarm" so it's able to help use high grade, long drain fleet oil bulk if you have both diesel and petrol cars (e.g. 20L, 40L drums) , one of the main tricks. Unfortunately, such oil is "only made in one or two viscosity sets" to be as competitive by cheap as possible at a high grade, hence not much product choice! (You then need to know how to operate your engine with your vehicles difference of oil grade).
Whether speed comes from OBD or GPS is irrelevant when turning, it has a calibrator for speed (kph or mph) allows it to be shown a few Km's above speedometer by the setup so if your tyres are a piece wrong and too fast for the speedo or you want to be sure stay below speed limit, output shown will always be adjusted.

SEE the newer thread post.

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