If water steam cycles were implemented for higher engine efficiency would the average Joe remember to refill water every day?
If sea water could be used in steam systems in cars driven on arid lands could then cars actually prevent or reverse desertification?
Water vapor cycles can be either
Six stroke engine
Six-stroke engine - Wikipedia, the free encyclopedia
Blowing water in the exhaust to boost turbo power recovery
or just Steam turbines
Steam turbine - Wikipedia, the free encyclopedia
External combustion engines
External combustion engine - Wikipedia, the free encyclopedia
Steam engine - Wikipedia, the free encyclopedia
Other advanced steam technologies
Advanced steam technology - Wikipedia, the free encyclopedia