Bugs...
3. You saw the previous image, yes? (Passenger's side gets dirty, driver's side stays clean.)
4. Even in your own video you see red flashes on the blue side, blue flashes on the red side of the Arjent. Shouldn't do that. Also, many of the textures for flashing lights are white, and not very colored. The taillights corona is red but the texture on the car is white, the Arjent has white-looking textures while the coronas are colored.
Suggestions...
Watch the video I posted, it shows white flashing headlights and flashing corner lights.
The video shows it for maybe a second, so I drew you a diagram in the post. (You can see it your own video https://www.youtube.com/watch?v=Mojibaq-8hk )
If it's a spawning extra, it isn't that big of a deal, but I'm asking that it won't always be there. Only LAPD traffic uses them and, if they have them, they always have lights on them (see 2's video), so you'd want to add them if you can.
Another great video...