M30 new kinks happening to me

I for some reason decided to go online chatting before work at the parking lot. I run into a girl masturbating so I decided to pull it out for her. I was nervous someone would see me from work or that there were cameras in the parking lot. In the end I couldn’t resist so I started masturbating for her. When I realized I was going to be late I decided to stop. But I was so horny I could feel I was about to cum. I tried to contain myself for like 20 second but then all of the sudden I started cumming without touching myself. This is something new to me. I came so hard I had to show her. At this point I had my passenger seat full of cum and I was so scared, pants down trying to rush. Thankfully I found tissues and clean ed it all. It felt so good coming to work and doing that, but I feel like next time I’ll contain myself and do it at home. All I could think is please I hope no one runs into my while cumming, it was fun