My Best Masturbation Experience

I was driving on the highway round about 5-30pm on my way home from work-traffic wasn't busy at all as it was a really old round about way I took home. I got really horny and started touching myself, soon I had my cock out of my zip and went into a carefree masturbating session, when a guy in a suv saw me and looked at me masturbating-he had no disgust watching me and never drove past or slowed down, I carried on doing it and slowed my car to almost a freeroll. I went slightly slower and let him watch me cum, as I shot my load he smiled and then pulled off very fast. It was so nice