Description
Automatically crushes concrete loaded into cars with a train.
Needs enough train mass and velocity and breaking speed research
The artillery wagons add enough mass and the nuclear fuel and the loopty-loop make sure the train goes fast enough.
Instead of artillery wagons, multiple engines probably work well too, quality would help for faster acceleration.
Note that if the final stop is too close after the cars, the train will already start breaking, that why mine does the final round.