The external sun visor and glass area

[mik]

Just thought i would ask the question and maybe get some talk happening about the humble external sun visor and glass area's in cars.
Here are on our big island continent that has often been subject to big temperatures and big numbers of day light sun/heat hours comparable to most other countries on the planet.

if i can go further into this , in past years it did seem we actually did see sun visors on windscreens of cars , even on the rear window on occasional models,
i suppose we could also mention the tinted window weather deflector doover on the driver / passenger doors and the old sticker windscreen sunvisors that are now illegal.

I don't know what sparked me off on this train of thought (probably the heat), anyway.......... while cruising down the road today in pretty high temperatures.................. i don't know what it got up to today .....35 Celsius was the earlier forecast, but the thing that occurred to me with the air conditioner running about half speed in the falcon and doing a pretty good job was the heat that still came through the glass all around the car, but most in particular the windscreen...........

for the bigger question why don't we use sun visors in this hot bloody joint.

Anyway to continue while cruising past car yards, shopping centres etc, ............how many cars with sun visors did i see ?
Not even one, nada/nil/zip/zero ???

i can't speak from experience of having one of the windscreen visors.... not that i can remember anyway, possibly had one on a valiant(ahh dementia)??
although i have had a full length roof rack on an old 4wd years ago and there was most assuredly some benefit to having a bit of cover on the roof and shadow on the windscreen, especially as the old patrols version of aircon was 2 windows down .

if i can even go further into the glass area and internal car temperatures,

on some modern cars the absolutely huge windscreens that rake back on some vehicles that actually are so big they end above towards the back of the drivers head, one small car i saw today the glass size blew my mind, and this is not uncommon when we look around.

i remember the stinking hot black Saturday Victoria and the previous hot days some years ago, i had just had the aircon serviced in the falcon a few days before black saturday 46.7 Celsius and hot wind to boot.............i thought oh well i'll take the Henry out and test the ac.......... holy bloody wow,

even with a good ac going hell for leather, the heat coming off the glass and mostly the raked windscreen was like a huge radiator throwing out heat.
Ok so there lies the question, in this day of moon roofs, huge glass area's, raked back windscreens in modern cars, why don't we use more external visors/etc ??