Haha, I'm an EE. I think I understand how radar works and gps. And pretty sure i could probably teach you something about both.
I think you should probably re-read my post
And for further info: metalic based window tints will interfere with radio waves. Similarly will interfere with cell phone reception. And i definitely understand the physics of how radio waves can penetrate concrete but not a thin piece of glass coated with a metalic based tint. If you want further info on that i'd be glad to discuss. Just like that nice little grid pattern on your microwave door protects you, we could get into a nice discussion of why it's impossible for microwaves to penetrate that glass and how they calculate the size of the grid pattern. I spent years studying EM radiation
Gps and Radar use completely different frequencies also, so while one may penetrate something doesn't mean the other will.
You and I need to talk...you are just as misinformed as the OP. PM me if you want to know wtf it is you are using in your car.
The simple version: Radar is an acronym and part of it being radio. Radio waves do in fact travel through glass. And GPS' obviously don't have issues with "penetrating" metal or glass since we've been using them in our vehicles for many years.
Actually, if any of you want to know more about radar detectors or GPS' then PM me. I may not be very good with cars or football or women, but I do know this.
And even better. Where are your radio and GPS (for stock navigation system) antenae located?
I'm pretty sure their location doesn't prove anything about radio waves penetrating metal or glass. lol
Maybe you should PM me if you want to know WTF it is you're using in your car.