GT-HD Demo glitch-Anybody else see it?

I'm not sure if it's actually a glitch or not, but I couldn't think of anything else to call it...

When driving through the tunneled section of the track, I can see a perfectly rectangular box that is significantly brighter than the rest of the tunnel. It looks like it is meant to represent the opening at the end of the tunnel and the way the light from the sun would flood in and cause your eyes to adjust.

However, this "box of light" is visible even before you round the curve enough to actually see the tunnel's end.

I'm wondering if I've tuned something on my TV way wrong (Sony SXRD 60A2000 over HDMI) or if it's inherent to the Demo itself. At first, I thought this was happening because I was experimenting with the Detail Enhancer function of the SXRD, but it was still noticeable when set to "Off." Unfortunately, I can't remember ever seeing it before so now I'm wondering if it was always there and I never noticed it, or I changed something!

Anybody else see what I'm describing?

I don't see it through the wall, it is always fixed equidistant in front of the car and follows the exact path of the roadway. It never changes in size or shape, just looking like an oddly perfect rectangle of light effect on the roadway, tunnel walls, and ceiling but occuring much too soon before the end of the tunnel (source of the light).

Well, the light flare I understand. Just like Felgar & I were discussing previously, it is supposed to simulate the sudden iris contraction a driver would experience going from a low-lit tunnel to the bright sunshine at high speed. I don't think that is terribly unrealistic and will probably be much more dramatic (and authentic) when the full version is released with an in car view.