Hi,
well there are a few things I see in those two shots that I'd improve:
- the grass texture is very blurry at the moment why not use detail maps (or multitexture but that'd probably impact the framerate more than you want it to do...)
- There seems to be no height difference between the road and the fields, if you look at the photo's you can see ditches at the edge of the fields or the fields are somewhat higher than the road.
- look into getting some dynamic grass, though it probably impacts framerate a bit you could think about doing it at a short distance and then fade it out. That'd make it a lot more interesting.
- Also add white lines to the road

Hope that helps.

cartoon_baboon