Her nostrils flared as the musky fragrance of her own cunt juice drifted up to her. The scent seemed to fill the whole car, and she was sure the chauffeur could smell it too, although he kept his eyes straight ahead as he steered the expensive car across the Golden Gate Bridge into Mann County.

She moaned, and without meaning to, slid her hips forward on the seat, opening her thighs wider so Dr. Villiers could get another finger into her. Her naked breasts were rising and falling rapidly, the nipples hard and aching, and her panties were becoming soaked. "Please stop – stop!" she gasped.

"I never stop an experiment once I have started it, my dear," Dr. Villiers said in a calm, unhurried voice. "That would be bad manners as well as bad science. You must cum for me before I can stop."

"Oh, no – no!" she cried, flexing her legs and then spreading them wider. She was lying almost flat on the seat now, and looking up, she could see herself in the rear view mirror. Her skirt was up around her waist, her legs were spread wide, and her thick forest of pubic hair was in plain sight under her wet panties. The plump pink lips of her vulva were exposed, with the man's fingers in the center of them, pumping into her innermost recesses. She looked absolutely wanton, and if the driver happened to glance over his shoulder, he would see exactly what she was seeing.

Shame turned Marcy's face red. "Please – please, let me up!" she begged, but her buttocks were wriggling frantically, and she saw her hands come up to grasp Dr. Villiers' hand and try to force his fingers in deeper.

"Very passionate for a virgin," he observed, and leaned forward to suck the nearest coral-tipped breast into his mouth.

Marcy bucked like a wild thing, almost torn apart by the violent sensations that possessed her. He bit down on the nipple, and something inside her skyrocketed and burst into a thousand falling stars, while her vagina contracted sharply and sent fresh gushes of juice onto his hand.