An idea/concept I had in my mind for a while. Access points to the interspace can be stabilized with certain structures as long as energy input is kept up.
This gives possibility to planets with high enough technological level and good infrastructure to have a permanent gateway to other planets and stations without even leaving the atmosphere. Bridges much akin to classic ones, stabilized inside the interspace, make ground transport feasible and very efficient.
The protagonist of the picture doesn't have permission to use this bridge-gate, but that won't stop him and his technologically tricked-out bike!
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A sketch/concept art hybrid wip pic, was experimenting with ideas while doing the drawing itself.