No no 18-Wheeler thats pretty interesting. You mentioned that you observed this in the morning, under what sort of lighting, was it low light or dim conditions?
I think it was about 6am or so, so call it low-ish light I guess. I'm pretty sure the effect could have been seen under full daylight though if you were at just the right angle.
Must upload some vids I have of starting the Garretts on the rattly old Metro's I used to fly - They get up a frighting glow.
