Lynton to Lynmouth funicular, Devon, England.
This must be about the greenest method of transport. The two carriages are connected to one long loop of cable. When one carriage is at the top, the other is at the bottom.
The top carriage fills up a water reservoir underneath, from a piped stream. When the reservoir is full, the bottom carriage starts letting water out of its reservoir, until the weight imbalance causes the both carriages to move.
The carriages pass each other halfway, and a brake is used to slow the lower one as it reaches the bottom.
The top carriage now has an empty reservoir, which it fills from the piped stream, then the lower one starts emptying until the imbalance etc etc.
No fossil fuel. No CO2, just water being taken in and let out....
Clever, those Victorians.
View from the top.....