Masturbatiom And Driving

My girlfriend and I had driven to the beach and had enjoyed a pleasant day swimmimng and sunning ourselves. Nothing sexy as it was busy with families. We set off to drive home feeling very horny and as soon as we reached quiet country roads she put her hand down my shorts and took my cock into her hand. Instant stiffening. I respnded by putting my free hand down her shorts and touched her clit.Instant wetness. She gently wanked me, I gently fingered her. This went on for a mile or two when I was losing concentration on driving so I pulled into a field and stopped the car.Almost immediately I came all over her hand and my shorts. I touched her braless nipples and worked on her cuntwith my fingers until she came too. We rested and then drove home thankful that I stopped before I came. When I came I was incapable of driving. 

Has anyone else ever been wanked whilst driving?