Greg blinked, the person standing naked in front of him resembled Jeff, but was mostly definitely of the female persuasion now.
"What happened to me?" Jeff gasped in a voice two octaves higher than before.
"Guess, the dual exhaust system gave you a vagina as well as an asshole," Greg laughed with a smirk. "Too bad you're a flatchested homely woman. Bet the Chronovac can fix that though," he said typing.
"Please change me back into a man." Jeff gasped as his boots swelled to Double Ds. "No, Greg, I don't want to-" He stopped talking his eyes glazed over.
Greg typed in changes to awareness. From now on Greg had an older sister instead of a brother. He muttered, "A car always is female right? So makes sense if Jeff is my car, he should be female too."
He stepped in for a closer look, and saw the personalized brass slave collar around Jeff's neck. Greg smiled. It read, "Greg's Ride." Jeff was eliciting a boner from Greg in his new upgraded female form.
Jeff now looked like a playmate centerfold, and Greg was positively drooling.