Here's a couple things about HIDs. Most of the time when you see brilliant blinding HIDs, it's because of this...



Fluted headlight lenses. This is on just about everything with popup headlights (240s, miatas, corvettes) and a lot of cars older than 2000. That's your run of the mill EGs and DAs, anything with a replaceable square headlight. Fluted lenses are designed to scatter light, since halogen bulb technology was pretty shitty 20 years ago.

Second, a good portion of these tuner cars are 10-15-20 years old, they have saggy body parts, most of them have been in accidents, so very few of them have properly lined up headlights. All it takes is for the core/radiator support to be moved just a bit to throw the alignment.

Then you have trucks. All of them sit higher than cars, some much higher, and that all puts their headlight beam directly in your line of sight, rather than towards the road.

That about covers most of the culprits.