My father bought me a second hand truck with which to ride around the farm, we live on a large plantation farm with some nice hills and valleys.
I enjoy taking myself off into the hills with a book and some lunch just to sit out in the open and read.
The one day I was sitting in the truck reading, it was quite warm and I had my legs, one on the dash and the other on the floor, it was quite a romantic story and eventually my mind started wandering. I started moving around a bit and my panties brushed against the gear lever, this just set me off I couldn't resist touching myself till I orgasmed. I now make this an outing I look forward to on the weekends when I am alone.