"Yeah, I guess...." he conceded. Though he began to cross his legs in his own seat. His need to pee only growing. "I'l pass, thanks mom." he said, as he heard a deeper groan from his mom's gut and realised what was imminent.

---------------

The driving continued for another hour or so, the air of the car saturated with the smell of two very poopy diapers. Eventually Sue's mom heard her daughter wake again, and turned around to see.

Though of course. Mrs. Reed was paying attention, she could see Arthur crossing his legs in the backseat. "Dear, why don't." she stopped mid-sentence as her own bowel moment began. Though she continued to talk through it. "You pull over. I think we need to do some changing around here." she stated while her diaper filled in the back to the front, only adding to the scent in the car.

~~~~~~~~~~~

Sue Ellen was up once again, and immediately she returned to pushing her crotch into her belt buckle, quickly trying to get the same relief she'd gotten before falling asleep last time. She was doing so furiously, though her constant humping was starting to wear the diaper out in the front, it could take being soiled, but the constant battering of it was weakening it, pulling the tapes a bit with each quick thrust.

"Of course dear." Mr Read smiled at her. "I think we have two stinky girls to change, huh?" he said, already with an erection from watching his wife mess herself, as he pulled over and brought the car to a stop.

"Oh, thank god." Arthur said, desperate for relief, and blissfully unaware of the imminent fate in front of him as he unbuckled his belt and stepped out, where his parents were already setting up the changing matt.

-----------

"Sweetie, can you stop for a minute, I think your diaper is abut to fall apart!" She said, stopping the car in a side lane as she got out and came around to the back, diaper bag in hand. Retrieving the remote dildo from it, she handed it to Sue. "Push that deep into your cunny baby. Mommy will take care of the rest." she explained, taking the remote for herself and re starting their drive.

Mrs. Reed decided to let herself get changed first. DW could come after, besides, the girl was still sleeping, and it would be better to let her keep sleeping until they had to wake her up. Though as her husband got to work she whispered to him. "I think Arthur needs to pee, so I'm going to double him up with DW in one of my diapers, maybe he'll learn a little about whining so much when he knows this is how it is." she explained to him.

~~~~~~~

Sue Ellen didn't stop until her mom gave her the implement, which she happily shoved into her body, though when it didn't do anything past the initial insertion, she began to fidget, she needed relief and she only knew one way to get it, so her mom better do something before she went back to shoving herself into her buckle.

"He's not going to like that." Mr Read whispered back as he continued with the change. "And I doubt she will either." he said as he wiped his wife clean of poop and rolled her used diaper up. "Though I suppose the two could learn to love each other a bit more. And Arthur could learn to appreciate his sister and moms diaper needs a bit more." he agreed as he finished changing his wife, helping her up.

"Uh, mom, can I go behind the bushes? I need to pee!" Arthur asked, oblivious to the conversation as he did the potty dance.

----------------------

Smiling, her mom started the engine and set of. As they got to a steady speed, she picked up the remote, and turned it on. With settings of 1 to 10, she decided against using the auto feature, and manually started it at the 1/10 setting.

"Dear, if you could get DW while I get Arthur ready." Mrs. Reed said after she was finished getting cleaned up. "Actually Arthur, we have an idea of how we're going to do this." she said as she approached her son. She knelt down and began taking his pants off, then his underwear as her husband took care of DW. "See, since you can't hold it in, and aren't being quite respectable about certain needs, it'll be best if we get you in a diaper for now." she explained.

~~~~~~~~~~~~~~~~

Suddenly, Sue Ellen felt vibration, it was coming from whatever she'd inserted, and it felt amazing. It wasn't as forceful as her constant humping, but the continuous buzz that it let off was enough to keep her libido at bay as she enjoyed the treatment of it inside of her. It definitely calmed her down quite a bit as she lay awake now.

Arthur just stood, and hopped, where he was, too stunned -and desperate to pee - to speak as his mother de robed him dramatically. "What! No! Mom, I'm not a girl, I don't need diapers!" he complained and whined. Whilst he secretly liked diapers, he didn't want to wear them in front of everyone!

"Alright miss stinky pants, you know the drill!" Mr read told DW, patting the laid out changing matt, as the groggy girl began to wake.

-------------

"Enjoying it are we?" her mother giggled at her daughters predictable reactions. She touched the remote, and pushed it up to setting 4.

His mother seemed to just ignore whatever he said as she pulled the diaper up between his legs. Then the got it wrapped around him very quickly and taped shortly. After she opened the front and puffed a few bursts of powder down into it. "There we are, you feel free to wet that whenever you feel like it Arthur." she stated

"Hm?" DW said with a yawn as she stretched a little bit, feeling the mass in her diaper, and looking to see the changing mat, she quickly realized what was going on. She crawled over and laid herself out on the changing mat. Stretching her body out as she just began to wake up from her nap.

~~~~~~~~~~

"Uh huh." she responded as she just enjoyed the dull, yet pleasurable vibration coming from the device inside of her, though when it suddenly ramped up she began to twitch and moan lightly, as the pressure was enough to get things building up down there as she experienced a slower build up for once.

Arthur only spluttered further in protest, not able to do much more than blush as he was diapered. "I don't need it!" he insisted, even as he struggled to move with the sudden bulk between his legs, a pronounced waddle present as he tried to walk back to the car under his mothers watch. He wasn't going to use it! He was a big boy!

"There we go." he father said as with practised hands he swiftly got her changed, nose wrinkling at the mountain of large mess she had made in the seat of the diaper. "Yeesh, good thing we used those travel diapers huh!" he said as he wiped her butt and groin clean of the muck before balling up the soiled diaper and setting it aside. "Hold still whilst I get some powder and cream on you dear, don't want to get diaper rash now do we?!" he exclaimed.

--------------------

"Good girl, just enjoy it." her mother cooed as she shifted in her own messy diaper. She switched the setting up to 5, and decided to leave it there for a while.

After she diapered Arthur she went ahead and got back into the car herself, seeing as he was diapered, they wouldn't have to worry about him having an accident as they continued to drive.

As she got herself wiped up by her father, she slowly began to feel more and more awake. Eventually she stopped moving so much as he went to put the powder and Cream onto her rear end. "No." she responded simply to his statement, having a diaper rash was pretty awful.

~~~~~~~~~~~

After the setting went up, Sue Ellen laid back in her booster seat as the feeling within her steadily grew over time. Bringing her closer and closer to an inevitable climax from the sustained vibrations she was feeling down below coupled with her first heat.