The Terra Ignota sci-fi series by Ada Palmer depicts a future world which is also driven by “slack transportation”.
The mechanism, rather than portals, is a super-cheap global network of autonomous flying cars (I think they’re supposed to run on nuclear engines? The technical details are not really developed).
It’s a pretty interesting series, although it doesn’t explore the practical implications so much as the political/sociological ones (and this is hardly the only thing driving the differences between the present world and the depicted future)
The Terra Ignota sci-fi series by Ada Palmer depicts a future world which is also driven by “slack transportation”. The mechanism, rather than portals, is a super-cheap global network of autonomous flying cars (I think they’re supposed to run on nuclear engines? The technical details are not really developed). It’s a pretty interesting series, although it doesn’t explore the practical implications so much as the political/sociological ones (and this is hardly the only thing driving the differences between the present world and the depicted future)