Express Train to Phobos

EXPRESS TRAIN TO PHOBOS
Made in a hurry for Train Jam 2016 by @Mildmojo and @JonahD
Extremely unfinished

Work together to power your train to escape the bonds of Earth (at 42,070 km/h) by fueling the train through the most inconvenient means available!

P1: Fire coal from your coal cannon, using the convenient buttons on the floor.
P2: Use your coal crane to move fuel from one hopper to the other, using the extremely convenient buttons on the floor.
P3: Match the weight on the right with chunks of coal to send it to the engine. Make sure you don't overbalance the scales!
P4: Just hit the coal with a hammer, a lot. Trust us, it's totally safe and completely plausible.

Escape to quit.
Will automatically detect controllers, but fallback controls for all players are:
P1: WASD
P2: TFGH
P3: IJKL
P4: Arrow Keys