I don't think this is true regarding a racing surface. Most tracks are designed to drain water not create a lake. So with that point, it would take perfectly flat non-porous surface to create reflection of that intensity. Racing surfaces are not perfectly flat, they may be non-porous to an extent(such as concrete) but even then, there would be water flowing, i.e. draining, across the track creating some refraction and therefor not a perfect reflection. Also, you lake analogy doesn't work because there is likely going to be wind during rain storm and the rain droplet would disrupt the mirror like surface in your lake analogy. And even after the rain has stopped the water will begin to puddle adding irregularities. This also relates your argument that the water being this enough to negate surface variations. Aside from the fact that water droplets would nullify this argument, the water moment over the surface would create enough irregularity to make the reflection much less bright or like said before, begin to puddle creating different levels of reflection. I think this is what I'm trying to explain: http://drjeffbangkok.squarespace.co....jpg?__SQUARESPACE_CACHEVERSION=1270544978548 I agree with Nor, the reflection is a little too mirror like. Of course, it could just be the location of the camera intensifying the reflection. Regardless, it's still very nice to see this feature.