I was playing around in blender.
that’s cool how you made it ?
you are using planes with alpha and shadeless?
I selected all the faces that had the tail lights, duplicated them and separated.
then I edited my texture and made the tail lights brighter.
Then I applied that new tex to the seperated faces.
then I added logic bricks that made it always invisible, but visible when you press the down arrow key.
that’s clever, nice idea
Sure, anytime! 
Funny, I used this method before. I just never thought everyone knew about stuff like this, anyway good example.
couldn’t you just have planes set to ‘add’ over top of it?
Nice, its a simple yet very effective detail which goes missing in a lot of games around here.
I did it with my hummer vs heli game, but i used a plane with a alpha and scale IPO, so it kinda grows and alphas in quickly, the fades away (using the flipper setting in the ipo actuator)
Yeah, normally I have a plane, and the texture is a big red square with lots of feather, and it’s to bright. You normally don’t see it that bright except at night time, so I tried it thid way.
I also added glow around it.
The reason I duplicated the faces where the tail lights were, was so it was the same exact size, and I had more control around the area where the tail lightes were.
I don’t get it :S