Copper Trolley and Copper Rails

Introducing the Copper Trolley, crafted from a regular trolley, 5 copper ingots, and 1 diamond. Found in abandoned mines, improved rails offer better performance. Both can oxidize, affecting speed. Copper Trolleys accelerate on Copper Rails up to 18 blocks per second, decreasing by 2 blocks per oxidation stage. Add an "automatic coupler" with two iron pieces and thread to link trolleys for efficient transportation.

In addition, introduce "boosters" that can be placed on rails to temporarily increase the speed of passing minecarts. Boosters could be crafted using redstone components and gold ingots, providing players with a strategic way to enhance transportation systems. This addition would offer further customization and optimization options for rail-based travel in Minecraft.