As they continued on their journey & the sun began to set, a fog began to roll in, enveloping them in a thick mist of imperceptibly-light pink. The air inside of the changing vehicle took on a minor tinge of sweetness, as the fog was able to make its way inside through the same form of magic.
"....Sweetie, do you know where we're going? I can't see anything outside of this fog." Linda asked.
"I'm sure that we'll find something if we continue pressing on….. I'm sure of it." Henry replied, his feminine voice taking him aback for a few moments. While he hated his voice, some deep part of his rubbery brain told him that it was lovely, and that worried him: A roar from the car came about, as Henry put his foot down on the gas pedal, accelerating the station wagon.
It was hard for Henry to keep his focus on the road: The squeaks and squelches that came from the idle strokings of everyone else in the car were impossible to ignore, along with the rubbery scent that accompanied the new juices flowing from their new genitals. Add to that the sweet scent of the fog’s air, and it was taking all of his focus to not give in to the throbbing demands of his erect prick, or the empty feeling in his plump pussy.
Unbeknownst to the whole family, their already-drastic physical transformations had covered up the fact that their physical & mental ages were tampered with by the fog, roughly averaging their ages out amongst each other: Henry & Linda had their ages rolled back to 23, whilst Debra & the twins were aged up to 22 and 21 respectively. As both parents were more hesitant towards the change overall, only their mental subconscious was tampered with, giving them a more youthful & happier outlook on life in general. The children, having been more accepting of the changes handed to them, were stuffed with multiple years of knowledge & experiences in the span of a few minutes. While their memories weren't tampered with, the fog superseded the need to do so by seeding their minds with thoughts of being born from the same egg cluster, allowing their auras to do the rest of that work later.
On the physical side of the changes, the children were given growth spurts, putting the twins at 5' 9" while Debra grew to 5' 11"; Henry & Linda went through the same (albeit smaller) growth spurts, putting them at 6' 3" and 6' 1" respectively. Everyone's proportions filled out as they grew, maintaining their beauty-scale-breaking perfections in the process: Everyone's breasts became near-spherical & slightly larger, with each one gaining a cup size, whilst each nipple widened until they were at least the size of a quarter, with some growing even larger than that. Their rear ends filled out to become perfectly round bubble butts, whilst magically retaining their firmness. Soft latex paw pads formed on their fingertips, along with the upper & lower thirds of their clawed hands, providing the dexterity of human hands & the soft cushioning of paw pads in one package.
Unfortunately, their current attire didn't grow along with them, prompting their clothing to burst off of their squeaky bodies and fall onto the floor of the changing station wagon. The only pieces of clothing that survived were their thongs & their collars, and even then the former were at their limits, straining themselves under the new proportions.
The biggest change however was to their newly-molded male genitalia: Everyone's pricks & balls grew dramatically in size, as the latent lust induced by the fog grew them even further. Henry's unattended prick consequently grew dramatically, surging to 14 inches in pure length, while his balls grew to the size of grapefruits, with each one becoming around 6 inches in diameter. His wife's cock grew to 11 inches in length, while her balls grew to be about 4 inches in diameter. Debra's own balls filled out until they were about 5 inches in diameter, as her prick grew with each pulsed lust, stopping as it reached 12 inches in length. Rick & Sam both stroked their lengthening dicks with pleasure, as their balls grew to become 4 inches in diameter, and their dicks tapered off at 10 inches.
Just as quick as the wave of magic that had transformed them, the thick fog was barreled through as fast as Henry could drive. A bit of relief rolled over his shoulders, oblivious to the fact that the sweet scent still lingered in the car, and that time had shifted, with the sun now approaching its sunset.
Debra, like her brothers, was busy stroking her new engorged member, which sent a warm and satisfying pleasure throughout her body with each full-length stroke. (This feels lovely… Why would anyone deny this?)
With the sun almost fully set, they would reach an offshoot to the road that they were on: Determining what was off on that offshoot was hard with the trees surrounding the area.
"Honey, let's go down that road! Maybe we'll find something there that could help us~" Linda pointed out, using her free hand to point at the offshoot path: The other hand was busy stroking her new lengthy rod at a slow & methodical pace, drip-feeding her pleasure with each stroke.
While he didn't want to go off of the main road, Henry was desperate to find something to remedy this situation, and with the sun setting down, options were rapidly running out. A moderately sharp right turn was made, taking them down the offshoot path. What they'd found disappointed him: The long and double-lane-wide road led to an abandoned military compound, with the gates into the compound left wide open. The various cracks in the pavement had tall grass growing out from them, and the exteriors of the buildings on said compound showed signs of a lack of maintenance for some while.
Henry internally sighed. (Welp, this was a bust. Might as well see what's inside one of these buildings.) He thought as he drove up to one of the buildings and parked their car in front of it.
"Alright, everyone out of the car: Maybe we can find someplace here to stay for the night!" What was supposed to be an exasperated voice came out as bubbly and cheerful. (...Another one onto the pile of worries, I guess.) He had thought to himself, as they had all exited the vehicle. However, his worries would only keep escalating, as he turned around to only become shocked by what their ride had become.
Their sexual auras had morphed the former station wagon into a convertible fit for a pack of always-horny herm foxes. Its erotic-pink-&-carmine paint scheme had a glossy sheen to it, drawing the eyes of anyone near enough to even glimpse at it. A voluptuous red-and-white silhouette of a vixen reclined along either side, posing and smiling seductively, with golden flames curling around her form. The front of the car's hood was adorned with a silver plastic hood ornament of a herm fox, hir legs spread apart whilst appearing to be lying down at an angle, with one hand wrapped around the base of hir lengthy cock while the other blew a kiss to the world. A closer inspection would’ve revealed hir to be wearing the barest of bikinis, and that shi was wearing platform heels on her digitigrade fox-like feet.
Henry was speechless, staring at what the family vehicle had transformed into. Debra couldn't hold in her chuckle, before looking around their immediate vicinity for anything that stood out.
"A perfect vehicle for the pack~" Debra cheekily said, another moan escaping from her mouth as she continued to stroke her cock, just like her brothers, no, sisters. (Sisters? …Yeah, they are my fellow sisters~ )
Both twins had looked at the car before giggling to themselves, teasing each other's members in the process.
(I have to admit that it's the perfect car for us~ ) Henry thought to himself, which prompted him to be snapped out of his stupor. Blinking a few times before managing to come to his senses, he had only begun to notice that night was approaching fast, and that he needed to find some sort of switch to power up the compound.