Portal technology.

He entered the room only to find his sister wearing just underwear under an open white lab coat. She often lost herself in her research and really didn't bother with the fact that she was teasing her brother. It only helped K-T be reminded of the large unattended erection tenting his shorts.

"I did it K-T! The Holy grail! Stabilized quantum wormhole flux, allowing for instantaneous multdirectionnal matter transferrance!"

"Hmm, what? Can you translate what you said in normal terms?" said K-T, once again dumbfounded by the techno-babble of his sister.

"Portals, K-T! Teleportation! If I manage to scale it up people will be able to walk through a door and find themselves on the other side of the globe in an instant, or even on other planets if we can send another device there."

"That's awesome, it will shorten travel a lot."

"It will also save power and reduce emissions if we don't need trains, boats, trucks, planes or cars anymore."