It's certainly a strange error, completely black, not so dark is appears black, but completely black. I don't think different textures are used during night time, and the stage worked fine the first running. Some sort of weird shader glitch then.
I'm running W7 64bits with an AMD graphics card, how about you guys?
Edit: My headlights were illuminating trees, but not the ground. As if it were absorbing all the light.
Same as you. Win7 64 bit, Sapphire Radeon 6850 Vapor x. I noticed that same thing happens with Bissane night also. The car is red and all other is black.