Rails, rail wheels, small/medium/large steam engine, knuckles, resizable chains, ropes,whistles and horns.
You can see where this is going.
My idea for rails: for testing, a simple short line that's is 3 blocks in width, go from bandit hangar to bandit bridge. Once mastered, make a line that could go from bandit to Murphy by going straight through the volcano, or go around the mountain with a left approach for slower steam "trains" and on the right is a smooth 5 degree banking turn to Murphy bridge where both traicks merge into one track to cross the bridge into the back of the hangars.

Dev response: "the games name is SimplePlanes"

My response:"then why are there cars In Simpleplanes"

Dev response 2: "were hard at work on simplerockets 2"

My response 2:"well that is just awesome"

I'm just tired of not being able to test airfraimes by launching them off rails.