... is just a handbrake. However, this 1970 UK advert for the venerable MG Midget pulled out all the stops to convince guys that it is indeed a man's car. So, what more incentive do you need to slide into a an MG Midget than a winsome young thing in a short dress carefully studying the handbrake lever? In the late sixties-early seventies period MG used a number of images designed to grab the attention of a lad in rut.
Just an aside here: the young lady must be all of four feet-six and weigh 80 pounds. Helps the Midget interior look more commodious than it really is, I suppose.