"it's an oval, not much challenge is there...?" - 30 seconds later I've been proven wrong yet again. Took nicecuppatea's wonderful Fiat out and, once I'd learned that I can't drive flat out, just admired and appreciated the detail.
The track has something that only the top circuit modders can capture; immersion. To me, immersion is broken when there's something that sticks out as 'from a game', like repeated tree models, inconsistent texture quality or unrealistic colour palettes. Immersion is never broken driving here; the details are spot on.
I understand this isn't the 1.0 release because a few details need to be worked out still, but the actual track model, textures and execution are outstanding.