Either IGN is retarded or they slipped a megatron: "driving around the Nordkurve at sunrise is a very different experience from racing in the middle of the night. Choose the latter and visibility is obviously impacted dramatically, the dazzling glare of brake lights preventing you from having a clear view of the track when you're sandwiched in the middle of a pack of cars all vying for pole position. In stark contrast there's almost an air of calm when tackling the same race at dawn as the sun blinks over the horizon."
It's from their preview..