Leeds Trolleybus Plans Rejected

According to one report, Leeds is the biggest city in Europe without a tram or subway system.
In my humble opinion, I think due to new technology that does not use overhead wires, trolleybus systems will start to vanish, but I heard today that San Francisco is ordering about 30 new trolleybuses and Peking will invest in new trolleybuses due to heavy air pollution.  Who knows what the future will bring.  As I said before, I saw a 1959 New York City Transit Authority year book which stated that the Brooklyn trolleybus system, which at that time had vehicles about 11-12 years old, was about to be converted to diesel bus, because the "trolleys were becoming fast obsolete..."  In 1960, the trolley buses were pulled but the life of a trolleybus is much more than that of a smelly diesel bus.  Toronto  Canada also had trolleycoaches built I believe in 1948 but they continued to run to around 1971 when their electric components were transferred to new Western Flyer bus bodies.

Leeds, I feel your pain. Were not trolleys for 42nd Street in Manhattan rejected at the last minute around 1992 after much research and planning because the mayor of New York was concerned about water main breaks on 42nd Street?