I have done this many times, driving locally or on long trips. Sometimes I just have my pants unzipped and my cock fished out, but many times I have my pants pushed down below my waist. I prefer the latter because of the ease of access.
I like to jackoff as I am driving, and should someone come up beside me and see what I am doing, all the better! I enjoy having an audience!
If I am stroking as I drive and am getting close, I will get off as soon as I can to finish the job. Sometimes that is on a side road where there is no traffic and other times that is at a rest stop.
When I have stopped on isolated roads, I like to get out and just jackoff in the open air. When I have stopped at rest stops, I may finish in my car, or I may go into the restroom and finish while standing at the urinal.
With the many times I have jacked off on the road, I have not cum while driving, and I find that my focus on the road is very good. I have even found that jacking off while driving keeps me from getting tired and falling asleep on the longer road trips!
Those times that I have pulled into a rest stop, I have actually gotten caught only one time. I was standing at the urinal stroking away in clear view of the door when someone came walking in. I kept stroking, came, then zipped up and left. The other person did not say a word, but he did watch.
