The world is at a technology level where it is capable or interplanetary travel.
What changes can be made either to the planet or to the physics that could prevent them from ever creating cars planes or tanks.
I think you're asking the wrong question. If they are that advanced, then it's possible they abandoned the use of these kinds of vehicles, for the most part.
Otherwise we have very little info. Perhaps these people have telekinesis that's easy to use, so they never had to develop wheeled transports of any kind. Perhaps since they invented teleportation for quick travel and they eliminated pollution-causing vehicles, there aren't many land vehicles.
Perhaps it's a waterworld? Just tiny bits of land, so it's not over useful to have vehicles. Mostly people walked everywhere, or swam, or used boat transport. Why build a bridge if you've always used boats throughout your history? Maybe when they got really advanced someone built an elevated train. (you never said a train was off the table....) No planes because no runway space?
Seems a little insane to change fundamental aspects of a planet's physics just to achieve this, when a little shift in geography, and mainly culture would do.