For an alpha, It's great!!
I've been lucky enough to run this road a few times. All the areas and angles, elevation changes, etc were recognizable, and very similar to my memories there (last time, almost a decade ago).
Probably it was due to the car's physics, and going all the time over the yellow line, but maybe it could use with a bit less grip?
I would love to have better quality textures, but maybe I'd rather have all the roads available at this level, which seemed not perfect, but quite uniform.
Then, based on popularity after all tracks being released (and maybe guided by the community's feedback), you could start working on one at a time, then working on improving it graphically, AI, etc.