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This is a Tesla overflow parking, I was wonder what the reddish-orange glow you're seeing on the roof of several Model X

Big_Lingonberry_9704 | 2026-01-01 19:08 | 57 views

Comments (22)
VincibleAndy 2026-01-01 19:15

Extra layer of UV/IR filtering in the glass because with a glass roof it can get extremely hot inside under the sun and this is used to help mitigate that consequence. Edit: Its not just Tesla though, you see it on other glass roof vehicles, sun roofs. You can see it strongly on higher enc luxury cars like Mercedes (theirs look more blue/purple), especially in the morning with a light film of condensation.

fossilnews 2026-01-01 19:17

It's to keep the ~~UV~~ IR (thanks caj\_account) rays out. They no longer have this on any of their models afaik.

caj_account 2026-01-01 19:19

Should be IR not UV, UV generally cannot penetrate the surface well, but IR cuts through everything. Edit: basically every time I ride in a 3/y in san diego uber and burn my scalp off...

fossilnews 2026-01-01 19:38

Damn it, you're totally right. Not sure what I was writing.

caj_account 2026-01-01 19:39

no worries dude :)

[deleted] 2026-01-01 19:51

Interesting

LightMission4937 2026-01-01 19:58

Overflow=Junkyard

TheInternetsLOL 2026-01-01 20:47

It’s just a lot for all the endless demand I heard. Similar to their new promo for 0% at 72months and no money down for leases. Endless demand.

weasel_face 2026-01-01 21:48

My 2018 Model 3 Performance has this. It's only visible when wet. Drive through people comment on it every time it's raining.

reeefur 2026-01-01 22:47

Older models had glass that turned that color in rain etc. I don't think that's a new car.

CMScientist 2026-01-02 02:18

Partially false. Untreated soda lime glass is still nearly transparent for UV light between 350-400 nm ([source](https://www.researchgate.net/figure/Transmittance-spectra-of-a-regular-soda-lime-glass-control-glass-and-a-soda-lime-glass_fig2_317383431). Those are ionizing radiation and can cause cancer

caj_account 2026-01-02 02:22

How’s car glass untreated SLG? This is such a reach just to force yourself into the old conversation acting all smart and useful.  Windshields block 94% UVA and all UVB rays. Side windows block 71% https://pmc.ncbi.nlm.nih.gov/articles/PMC12037386/

Harold-Maude 2026-01-02 02:49

Really? That’s window tinting applied from the factory.

CMScientist 2026-01-02 03:00

The conversation is about treatment to glass so yes it is very relevant. Your own source indicates that using tempered glass blocks only 21% of UVA (fig. 1), this is the range i was talking about. Also, the useful blocking of UV occurs at the middle layer, not at the surface, so your comment of UV being absorbed at the surface is completely wrong. I also dont have to act smart when I have a PhD in physics...

caj_account 2026-01-02 03:08

My comment says UV cannot penetrate well. Where did I says absorbed at surface go away typical redditor.  I have a PhD also. I know what I’m saying.

borderlineidiot 2026-01-02 03:45

r/mildlyinteresting

CMScientist 2026-01-02 04:00

"UV generally cannot penetrate the surface well" your comment word for word. It does penetrate the glass surface well as the transmission is over 90% on the 2 sides. It seems that your dissertation committee should not have let you pass.

caj_account 2026-01-02 05:39

Fuck off dude

ymmotvomit 2026-01-02 09:59

Totally freaked me out when snow on the roof turned these colors.

Comfortable_Raise991 2026-01-02 14:13

I have a 2026 Model S and noticed this the other day while washing it. Kind of concerned me a little when I saw the red hue. I thought I might have applied something to the glass that created an adverse chemical reaction. It “went away” once I dried the car…thank goodness. This helps explain what I saw. Thank you, OP.

gadhalund 2026-01-04 20:17

Somehow musk has reinvented glass and now it rusts

MrSluggo23 2026-01-05 04:25

This is the answer

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