"...actually I'll leave you as you are until we get back to my place, I have a nice idea that I can use you for."
He unplugged Maria, allowing her to talk again. He also turned Jill into a pair of speakers (which were her breasts) and linked the pair together. As the two had the plugs inserted into them Maria felt her breasts again while Jill felt her Pussy. When the two were linked together they could each feel both as they received input from each other.
"Until we arrive feel free to chat to each other." said Joonas.
"MariaaaAAAA!!" began Jill until the pair cried out in bliss, all three speakers moving as she spoke.
The rest of the journey continued in near silence until Joonas got bored and plugged the pair back into his music, placing the pair in near maddening pleasure as they felt all of their own and each other's sensitive spots moving in time to the music.
When the car arrived at Joonas' house he took the pair inside, carrying them by their speaker cones and causing them to cry out again. He put them down in the living room and changed them back. The two girl lay naked on the ground gasping for breath.
"Ok girls" said Joonas, "I'm going to give you a choice. Each of you are going to be put to use in this house, one of you is going to continue on the technical side of things while the other will be going natural."
Due to their fatigue they girls were unable to answer so it was up to Joonas to choose. After a quick eeny-meeny-miny-mo Joonas selected Jill to be natural and Maria to be technological.
Jill was taken to a corner of the room where a large plant pot stood. Here she was changed into a plant-girl with no arms and a huge yellow flower replacing the lower half of her body. As she stood helplessly in the pot Joonas increased her breast size to an FF, firmed them up so they stood on their own yet continued to be very soft and sensitive and changed her nipples into small pink flowers. As he left he stroked one of Jill's large petals causing her to cry out as she felt him rub against her pussy. Her cry caused her to lean back and in response to her movement her petals began to rub against each other, locking her in continuous bliss. So she didn't break the peace and quiet of the house Joonas silenced her by removing her voice until he wanted her to speak again later.
As for Maria she was taken to a nearby desk and placed on top of it. As she was put down her legs vanished and her lower body began to change into a more box like shape while the area just below her ribs and breasts slimmed to unrealistic proportions. Her belly button began to expand across most of her now squared tummy and changed to become a glass screen. She suddenly felt something touch her breast and as she looked down she saw Joonas put a CD rom inside her, just above the nipple, as it went in her breasts increased to an EE and, like Jill's were made to stand on their own while still being soft and responsive. After a second she felt various things on her butt and looking round she saw Joonas plugging things like a keyboard, a mouse, an Internet connection and a printer into her buttcheeks. Her pussy lips were reformed into a pair of speakers and her mouth was made silent, left simply for display. As she felt her clit change into an on/off button she suddenly lost consciousness, now turned into a computer-girl.
Joonas stood back and looked at his handiwork on the pair. He now had a wonderful plant-girl and a sleeping beauty of a computer-girl all to himself. As he looked he pondered what to do next.