mant years ago before we were married my wife and myself were on holidays and went on a picnic in a national park, being young and horny all the time I suggested we do it on the bonnet of the car not expecting she would say yes but she did. couldnt stop the car fast enought. any way pulled over next to some tennis courts on the main enterance road and both of us got our gear off and did it by the court next to the road. when finished she need to go to the toilet which were 100mt away, of she trotted just as a car went past. 1 of the many public places we have done it