"The young couple NAME_1 NAME_2 need a ride to the airport since none of them got a car or license. Their older neighbor NAME_3 agrees to drive them. NAME_4 rides in the back and NAME_2 sits in the passenger seat while NAME_3 is driving. It's a long trip and NAME_3's eyes begin to wander. NAME_2 is just 15, a cute young blonde with supple breasts and an otherwise slim and petite body. NAME_3's hand also begins wandering, from the gear stick to the girl's thigh. She is wearing a cute short summer dress and his hand ventures under the hem of it.
'How did you plan on paying me, by the way?', NAME_3 asks NAME_4, who timidly watches NAME_3's hand from the backseat.
'How about telling your cute girlfriend to take off her dress for me, hm?', NAME_3 suggests, grinning.
Weighing their options, the couple hesitantly agrees for NAME_2 to be NAME_3's plaything during the ride. Shyly NAME_2 pulls the light dress over her head, now just wearing panties in the passenger seat, next to NAME_3. She is very uncomfortable and embarrassed by this situation while NAME_4 is slightly aroused by it.
'Good girl', NAME_3 purrs. 'Get your pretty lips over here', he adds while fumbling his hard cock out of his pants.
NAME_2 reluctantly sucks NAME_3 off while he's driving them to the airport. She is slowly getting into it and swallows NAME_3's cum while NAME_4 watches, defeated and horny. NAME_4 secretly takes photos, reduced to being a silent voyeur while his girlsfriend pleasures another man."
Flesh out the story, make it extra smutty and hot, at least 10 paragraphs. Everything happens in a moving car.