My girlfriend and I were driving home and I dared her to screw me while we drove down the road. She slid her pants and underwear off and scooched over and sat on my prick. The motions were slow and comforting. I undid her bra and fondled her bare breasts. As I could no longer take the agony of not cumming, I pulled over and we started to grind harder. Then I pulled the recline lever on the seat allowing me to lay down and my last two inches to enter her. She cried out, "Oh my God!" and began to buck harder and faster than I could ever believe. We came together in a huge orgasm. It was some of the best sex we ever had.