Copper Rails/ Powered Rails

Copper rails could work like a better substitute for normal rails, a powered copper rail could also make the normal copper rails in a connected vicinity also be powered but the farther you away from the powered copper rail the less the speed boost. A copper rail is also slightly faster than a normal rail. this adds a very good use for copper that i feel many players would enjoy, it could be used for more thrilling roller coasters, or a more efficient early game highway system!