I graduated from high school in 1981 so this probably was in 1980. I was a member of my states high school rodeo association so in the fall and spring I was always going to a rodeo to ride bulls on the weekends. One weekend I had a girl I knew who wanted to go with me. She was kind of cute so I said yes. We drove to a small town west of Denver and I did my thing with her cheering me on from the stands. I rode my bull but didn't place so we started home after the show. On the way back she laid her head in my lap and before I knew it she had pulled my cock out and was sucking on it.Since I didn't mind (who would!!) I kept silent. She pulled her pants down after a few minutes giving my fingers access to her pussy which was soaking wet. The truck I drove back then was 20 years old and on the highway the shifter vibrated quite a bit. It must have given her an idea because she laid her crotch right up against the knob and let it vibrate her clit. She continued sucking my cock (she was VERY flexible) and finally came very hard loud and wet. She didn't back off of that shifter though, instead she let it slide inside her pussy and started hand jobbing me. A few minutes later she came again just like the first time, loud, hard and wet, very wet, she squirted all over my seat. Good thing it was vinyl, lol. Anyway, her orgasm triggered mine so my cum joined hers on the seat. We had a slippery ride home but made it ok. There's nothing like having car sex at 55-60 miles an hour coming down a pass in the Rocky Mountains!