Reaching between her legs from the backseat and pushing two fingers into her very very tight pussy while another guy leans in the passenger side window to ...... her tits.
Might as well just pull her out of the car, put her on her knees and fuck her pretty face.
Just shove the whole thing in there, hands on the back of her head forsing to take it balls deep as her eyes water and she coughs and drools spit onto her tits.