initial ideas...and i mean initial! :/

I've had some random ideas floating around so I've tried to get something on paper with quick sketches. 

Here I've focused on a more rural part of the map using fields, farm land, country lanes, rivers etc.

I thought about the way the car could gain air while driving and used the subtle hill terrain in the fields in which players could get a range of heights.

as a way of blocking the car when driving through fields i thought about using high grass they can't drive through. or using high crops the the car can't get through.