A couple of weeks ago, I was in a rush to get somewhere for an appointment some distance away and my Wife was with me. I was driving and I was feeling stressed that we would not make it on time due to our delayed deparure. About one hour into the drive, still stressed we were going to be late I started feeling super horny. I noticed I was getting an erection: I'm never locked. No matter how much I tried to focus on the driving I thought any moment I'm going to cum. It was so difficult to stop feeing intensely lustful; but very stressed. The lust was hitting me in waves. I managed somehow not to cum; but I looked briefly down at my crotch and noticed a wet stain. My Wife saw me doing this and also noticed the stain. She had a look on her face I had never seen before . It was like an embarrassed or surprised smirk and then she said (apparently stifling laughter) I think you'd need to wear pads. I felt weirdly embarrassed; but feeling like this and that initial look on her face was a massive turn on. I was 17 days into that period of training. I know that if I could have just stopped the car and walked this would not have happened. What an experience. Just like to add that my car was suffering from a slight vibration at the time and so I think that played a part. Denial makes my body more sensitive.