Sex in driving class with the instructor

This young woman received a car as a birthday present, and she can't wait to drive it around town. She decides to sign up for driving lessons and attends them after her workday, so she wears a rather elegant outfit that distracts the driving instructor too much. The girl is very nervous and can't quite understand all the lessons she is being given. Suddenly she feels a discomfort in her vagina and in a little disguised way she starts touching herself to calm the sensation and see what is going on down there. The instructor warms up a bit and offers to help her, and suddenly she is masturbating her student. They lay the seat down to avoid people seeing them, but the windows of the vehicle are not so dark.