Spring RTS Engine

would this be possible

-make unit
-put on map with world buider
-function as bridge.
-unit contains 4 or more invisible units that transpor tover from shore to shore by default.
-unit hide hovers and shows a big bridge

cause it kinda would be cool

could do simple pathing and physics with lua across the bridge (no transport involved)
I might play with it...

What about all terrain units? Some workaround for them when they encounter the bridge?