As Debra and her mother's chests were well on their way to becoming as flat as a board, red rockets grew their way out of their vaginas as the outside sealed and became their sheathes. Henry and his now husband had theirs become the same at two feet permanently erect, while 'Debra' had his hit 1.5, and the twins an even 1.25. All average, normal lengths, really. Debra, now Dillon, absentmindedly masturbated.
"I'm feeling a bit pent up. Are we going to stop anywhere?" Dillon asked. Henry sighed, not wanting to veer off course, but that's when the next changes came along. Everyone in the car got shorter, but wider, thiccer. Their tails fluffed after they halved a foot, doubling in fluff factor. Didn't help their mangy coats that soon got dirtier, though, soon never having cleaned ever after cutting a foot in height and adding that back in hips and ass. Each of the males eyelashes lengthened to gaudy proportions, and permanent glitter permeated their grey coats, somewhat ironically making them seem clean at a glance. "Well, I'll think about it, sister!" Henry said, fluttering his long eyelashes at Dillons equally dolled up furry face, Lynard (formerly linda) giggling from the passenger seat. "I am feeling fairly hungry at this far into the drive..." upon hearing this, the twins began to chant "Food food food..." as they chanted, the family continued to shrink and round out, both Henry and Lynard ending up at 3 feet, Dillon at the same, and the twins at 2.5. They kept all their mass, though, so they became as stacked as possible. As wide as they were tall. Dillon covered his ears and both of his parents laughed as the twins continued their chant. "Better find something soon, honey."