Unzip your pants and have her jerk off your t-dick

The vibrations turn you on so much that you can't go on without being touched. You unzip your pants as you make out, slipping a hand beneath the brief-style harness you're wearing for the dildo and rubbing your t-dick. You gather some of your wetness on your fingers and bring them to her mouth, letting her taste you. She sucks your fingers eagerly as her own hand snakes under your harness. The combination of the excitement of the night, the vibrations through the seat, and her hand on your hard clit combine, making you pant. Carrie leans against you, breathing heavily as she jerks you off. You caress her thigh as she strokes you, and she hums out a little moan.
"Careful," she says, "I'm kind of close again."
"Me too," you tell her, "you're really good."

As she continues to stroke you, she repeatedly shifts in her seat, trying not to let her cock become too overwhelmed. You wonder if she'll be able to keep from blowing her load until you get off the bus. There's only a few more stops until the one near her building, but the way her breath shudders against your neck as she fingers you tells you that she might not last until then. You shift your hips against her dexterous fingers as you feel your orgasm building.
"How long until our stop?" you ask. She looks out the window.
"About five minutes," she tells you, still stroking your t-dick, "and then it's another five-ish minutes to walk to my building."
"Ten minutes... Do you think you can last that long?" you ask, knowing that drawing attention to her hair trigger makes it all the more difficult for her not to yield to it.
"I don't know," she breathes, "I guess we should try and calm down. If you cum, I'm not going to be able to hold back."