Corona light vs Self-illum materal vs light material for car head with mo-blur

[DPS]

What would be the best option in this scenario?

Currently I have a sphere light for the bulb - visible to camera, I want this to create a light streak. I also have an invisible diffuse only disk light that is a bit larger - to add subtle illumination to the road.

These lights are linked to my animated car moving (blurred) about 200 pixels in my 5000 pixel wide image.

[maru]

I would try with:
-The "glowing" elements of the car light being either self-illuminated materials or CoronaLight with "emit off" (those would be the parts which leave a light streak when mblur is enabled)
-The part casting light into the scene would be an invisible CoronaLight (e.g. disk or an IES) placed in front of the actual car light geometry
One reason for such a config would be that the illuminator would not have to pass through any glass elements.