Continue recklessly

You throw caution into the wind and decide to see how she handles it. "Would you rather give me a handjob on the way there, or a blowjob."

"I'm not giving a stranger a blowjob," she starts hotly, her hand reaching over, seemingly of it's own accord, to stroke your hard dick, "But I don't want to either." She keeps looking a her hand, then your face, then back to her hand. A confused an deeply concerned look appears on her face.

"Would you rather you rather enjoy it, or not be concerned until the ride is over?" You just want to enjoy her handjob for now.

"Not be concerned." Fine then, be that way. As soon as she answers, the look of worry slides off her face. You chat a bit with her on the way, and she directs you with her free hand. You pull into her parking spot close to bursting.

"Would you rather have me finish on your face or have you swallow it?"

"I would swallow," she answers nonchalantly, "Just tell me when you're ready."

"I'm ready now," you get out. She immediately puts her head down onto your penis. You throw your head back and groan in pleasure. You have never received a blowjob before and the feel of her mouth and her hand push you over the edge and you shoot the biggest load of your life. She gulps and swallows it all done.

As soon as her task is complete she pulls off your dick and goes to get out of the car like nothing happened. "Wait," you call out, "Would you rather invite me in and learn about why you have been doing these things or let me fuck you from behind out here in the open and never know."