Yes, shamelessly

Fuck it. You do need it and you will use it, since you were invited to. You are blushing as you take out the toy, but take it out you do nonetheless.You then push your legs wider, as the car would allow and push the dildo inside yourself with one hand, holding the blazer closed on the top with the other. The feeling of being filled up in such a situation is so overwhelming that you nearly cum right that moment. You are not entirely sure why you make an effort to hold that blissful sensation off, but you do; probably you do not want to show quite how over-the-top excited you are by all this even in front of someone who is likely experiencing rather similar feelings. Still, you know that as long as you move the dildo at all you will not be able to fight it for too long... And you are not going to move it slowly. Your self-control does not extend quite that far.

After the first two or three relatively careful movements to get used to the shape and the size of the toy, you are fucking yourself hard and fast; before you know it, the car is filled with wet squelching sounds, equally inappropriate for the place and time and reinforcing your arousal. Only after you hear a honk you realise you are no longer holding the blazer together, squeezing your left boob through it instead while the right one is almost completely out. You glance nervously at Ms Stevens and she chuckles, apparently unconcerned about someone in her car engaging in indecent exposure not all that far from her workplace. With the small proportion of your mind that is not entirely submerged by the dancing tension between your legs, you tell yourself to pull the blazer closed again and make a mental note to use the Rulebook to preemptively deal with any unwanted consequences of your unintentional little show... And forget all about the outside world as your other hand has continued to move the dildo all the while.

This time it takes you less than a minute of undistracted self-pleasuring to go over the top on the near-orgasm wave and you shudder and moan in your seat, temporarily forgetting where and with whom you are. As your body slowly plunges through the blissful release, however, the shame and humiliation push their way back into your consciousness too... But only to a degree. The excitement and the power of the orgasm will not be dissipating instantly, that much you know about yourself. Indeed, you are still recovering your senses when the car pauses in front of an automatic gate and moments later pulls into it.