Try to get free

You try several things in quick succession.

You push at the doors with all your might - but there's absolutely no give. They won't move at all.

You try to squeeze back out, but both your hips and shoulders are way too big to get out past a space that's the exact width of your narrow waist.

You try to turn to the side, but you don't have enough purchase with your feet or hands to make it happen. Even if you did, you're pretty sure that your massive tits would prevent you from getting back inside.

Finally, you desperately search for a latch or button or something within reach of your hands, both on the outside of the doors and on the seams themselves. But there's nothing. No way to trigger the doors to realize that they are still partially open, and try again.

The driver is clearly oblivious to your distress, and banging the door as loudly as you can with your fist is attracting no attention.

So you are forced to admit to yourself that you are completely stuck, and your anonymous sex date is ruined.

...Or is it.

15 seconds or so later, you feel a hand on your butt.