* 1cec0ld puts a minecart on the tracks (via commandblock or via placing it, whatever)
* 1cec0ld pushes it without getting in
* 1cec0ld watches it travel until it hits an unloaded chunk, where it stops
* 1cec0ld laughs at the next person who runs into it
This was the problem last time we had "Real" minecart tracks. Carts don't go through unloaded chunks, so unless we have a designated "Track Cleaner" there will be dozens upon dozens of carts sitting in the middle of the tracks, slowing people down, blocking them, and just looking bad.